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Iwashita T, Uemura S, Shimizu M. Endoscopic ultrasound-guided fine-needle aspiration for pancreatic cystic lesions: a comprehensive review. J Med Ultrason (2001) 2024; 51:219-226. [PMID: 38051460 DOI: 10.1007/s10396-023-01389-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 10/09/2023] [Indexed: 12/07/2023]
Abstract
Advancements in diagnostic radiology have amplified the incorporation of these techniques into routine clinical practice. Concurrently, the frequency of incidentally identifying pancreatic cystic lesions (PCLs) has surged. PCLs encompass diverse categories contingent upon their origin. Among them, branch duct-intraductal papillary mucinous neoplasms (BD-IPMN) and mucinous cystic neoplasms (MCN) are categorized as mucinous cystic lesions that have malignant potential. Even solid neoplasms occasionally show cystic degeneration. Therefore, precise differential PCL diagnosis is crucial to optimize clinical management strategies and detect malignant transformations. Endoscopic ultrasound (EUS) affords comprehensive visualization of the pancreas with high-resolution ultrasound, complemented by fine-needle aspiration (FNA) under real-time EUS guidance, which is a minimally invasive procedure for obtaining pathological samples. This synergy has established EUS and EUS-FNA as vital procedures in the management of PCLs, enabling differentiation of PCLs. Cyst fluid analysis has played a pivotal role in deciding the optimal management strategy. The efficacy of cytological analysis is limited by scant cytologic material. The "string sign" test evaluates fluid viscosity, and its simplicity warrants initial consideration. Amylase and tumor markers, such as CEA, have been studied, but they yield varied sensitivity and specificity. Glucose and genetic mutations (KRAS, GNAS) exhibit promise, while comprehensive genomic profiling underscores genetic insights. Through-the-needle biopsy and needle-based confocal laser endomicroscopy also show high diagnostic yield. EUS-FNA, however, entails risks like infection and needle tract seeding, emphasizing the need for proper utilization. Pancreatic cyst fluid analysis augments diagnostic accuracy and informs clinical decisions, making it a valuable adjunct to imaging.
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Affiliation(s)
- Takuji Iwashita
- First Department of Internal Medicine, Gifu University Hospital, 1-1 Yanagido, Gifu, 502-0061, Japan.
| | - Shinya Uemura
- First Department of Internal Medicine, Gifu University Hospital, 1-1 Yanagido, Gifu, 502-0061, Japan
| | - Masahito Shimizu
- First Department of Internal Medicine, Gifu University Hospital, 1-1 Yanagido, Gifu, 502-0061, Japan
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2
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Xu YC, Fu DL, Yang F. Unraveling the enigma: A comprehensive review of solid pseudopapillary tumor of the pancreas. World J Gastrointest Oncol 2024; 16:614-629. [PMID: 38577449 PMCID: PMC10989376 DOI: 10.4251/wjgo.v16.i3.614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/28/2023] [Accepted: 01/16/2024] [Indexed: 03/12/2024] Open
Abstract
Solid pseudopapillary tumor of the pancreas (SPTP) is a rare neoplasm predominantly observed in young females. Pathologically, CTNNB1 mutations, β-catenin nuclear accumulation, and subsequent Wnt-signaling pathway activation are the leading molecular features. Accurate preoperative diagnosis often relies on imaging techniques and endoscopic biopsies. Surgical resection remains the mainstay treatment. Risk models, such as the Fudan Prognostic Index, show promise as predictive tools for assessing the prognosis of SPTP. Establishing three types of metachronous liver metastasis can be beneficial in tailoring individualized treatment and follow-up strategies. Despite advancements, challenges persist in understanding its etiology, establishing standardized treatments for unresectable or metastatic diseases, and developing a widely recognized grading system. This comprehensive review aims to elucidate the enigma by consolidating current knowledge on the epidemiology, clinical presentation, pathology, molecular characteristics, diagnostic methods, treatment options, and prognostic factors.
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Affiliation(s)
- Ye-Cheng Xu
- Department of Pancreatic Surgery, Pancreatic Disease Institute, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - De-Liang Fu
- Department of Pancreatic Surgery, Pancreatic Disease Institute, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Feng Yang
- Department of Pancreatic Surgery, Pancreatic Disease Institute, Huashan Hospital, Fudan University, Shanghai 200040, China
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3
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Ohtsuka T, Fernandez-Del Castillo C, Furukawa T, Hijioka S, Jang JY, Lennon AM, Miyasaka Y, Ohno E, Salvia R, Wolfgang CL, Wood LD. International evidence-based Kyoto guidelines for the management of intraductal papillary mucinous neoplasm of the pancreas. Pancreatology 2024; 24:255-270. [PMID: 38182527 DOI: 10.1016/j.pan.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/14/2023] [Accepted: 12/22/2023] [Indexed: 01/07/2024]
Abstract
This study group aimed to revise the 2017 international consensus guidelines for the management of intraductal papillary mucinous neoplasm (IPMN) of the pancreas, and mainly focused on five topics; the revision of high-risk stigmata (HRS) and worrisome features (WF), surveillance of non-resected IPMN, surveillance after resection of IPMN, revision of pathological aspects, and investigation of molecular markers in cyst fluid. A new development from the prior guidelines is that systematic reviews were performed for each one of these topics, and published separately to provide evidence-based recommendations. One of the highlights of these new "evidence-based guidelines" is to propose a new management algorithm, and one major revision is to include into the assessment of HRS and WF the imaging findings from endoscopic ultrasound (EUS) and the results of cytological analysis from EUS-guided fine needle aspiration technique, when this is performed. Another key element of the current guidelines is to clarify whether lifetime surveillance for small IPMNs is required, and recommends two options, "stop surveillance" or "continue surveillance for possible development of concomitant pancreatic ductal adenocarcinoma", for small unchanged BD-IPMN after 5 years surveillance. Several other points are also discussed, including identifying high-risk features for recurrence in patients who underwent resection of non-invasive IPMN with negative surgical margin, summaries of the recent observations in the pathology of IPMN. In addition, the emerging role of cyst fluid markers that can aid in distinguishing IPMN from other pancreatic cysts and identify those IPMNs that harbor high-grade dysplasia or invasive carcinoma is discussed.
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Affiliation(s)
- Takao Ohtsuka
- Department of Digestive Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
| | | | - Toru Furukawa
- Department of Investigative Pathology, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Susumu Hijioka
- Department of Hepatobiliary and Pancreatic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Jin-Young Jang
- Division of Hepatobiliary-Pancreatic Surgery, Departments of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Anne Marie Lennon
- Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Yoshihiro Miyasaka
- Department of Surgery, Fukuoka University Chikushi Hospital, and Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eizaburo Ohno
- Department of Gastroenterology and Hepatology, Fujita Health University, Toyoake, Aichi, Japan
| | - Roberto Salvia
- Department of Surgery, Dentistry, Paediatrics and Gynaecology University of Verona, Verona, Italy
| | | | - Laura D Wood
- Departments of Pathology and Oncology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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4
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Mao KZ, Ma C, Song B. Radiomics advances in the evaluation of pancreatic cystic neoplasms. Heliyon 2024; 10:e25535. [PMID: 38333791 PMCID: PMC10850586 DOI: 10.1016/j.heliyon.2024.e25535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 02/10/2024] Open
Abstract
With the development of medical imaging, the detection rate of pancreatic cystic neoplasms (PCNs) has increased greatly. Serous cystic neoplasm, solid pseudopapillary neoplasm, intraductal papillary mucinous neoplasm and mucinous cystic neoplasm are the main subtypes of PCN, and their treatment options vary greatly due to the different biological behaviours of the tumours. Different from conventional qualitative imaging evaluation, radiomics is a promising noninvasive approach for the diagnosis, classification, and risk stratification of diseases involving high-throughput extraction of medical image features. We present a review of radiomics in the diagnosis of serous cystic neoplasm and mucinous cystic neoplasm, risk classification of intraductal papillary mucinous neoplasm and prediction of solid pseudopapillary neoplasm invasiveness compared to conventional imaging diagnosis. Radiomics is a promising tool in the field of medical imaging, providing a noninvasive, high-performance model for preoperative diagnosis and risk stratification of PCNs and improving prospects regarding management of these diseases. Further studies are warranted to investigate MRI image radiomics in connection with PCNs to improve the diagnosis and treatment strategies in the management of PCN patients.
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Affiliation(s)
- Kuan-Zheng Mao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
- Department of Pancreatic Surgery, Changhai Hospital of Shanghai, Naval Medical University, Shanghai, 200433, China
| | - Chao Ma
- Department of Radiology, Changhai Hospital of Shanghai, Naval Medical University, Shanghai, 200433, China
- College of Electronic and Information Engineering, Tongji University, Shanghai, 201804, China
| | - Bin Song
- Department of Pancreatic Surgery, Changhai Hospital of Shanghai, Naval Medical University, Shanghai, 200433, China
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Wang K, Qiu C, Xing M, Li M, Wang B, Ye H, Shi J, Dai L, Wang X, Wang P. Association of elevated autoantibody to high expression of GNAS in hepatocellular carcinoma. Heliyon 2023; 9:e22627. [PMID: 38107305 PMCID: PMC10724561 DOI: 10.1016/j.heliyon.2023.e22627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/19/2023] Open
Abstract
Purpose This study was based on hepatocellular carcinoma (HCC) patients of early-stage to explore the diagnostic capability and possible production causes of anti-GNAS autoantibody. Methods We evaluated the frequency of anti-GNAS autoantibody in sera from patients with early-stage HCC by enzyme-linked immunosorbent assay (ELISA) and the expression of GNAS protein in early-stage HCC tissues by immunohistochemistry. Western blotting (WB) and real-time polymerase chain reaction (RT-PCR) were utilized to examine the expressions of GNAS protein and mRNA in cell lines. GEO and International Cancer Genome Consortium (ICGC) databases were inquired to explore mRNA expression and mutation of GNAS in HCC tissues. Results The positive rates of anti-GNAS autoantibody in HCC patients at clinical stage I (78.1 %) and clinical stage II (57.1 %) were all significantly higher than that in healthy control (20 %). There was also a significant difference in GNAS protein expression between HCC and its adjacent normal liver tissues. The results from WB and RT-PCR showed a significant difference at the mRNA level but no statistical difference at the protein level between HCC and normal liver cell lines. The difference in mRNA level between HCC and adjacent normal liver tissues was verified to be significant. Furthermore, the ICGC database demonstrated a 10.6 % mutation frequency for GNAS in HCC patients. Conclusion The coordination of elevated anti-GNAS autoantibody, high expression of GNAS in the mRNA and protein levels in HCC, and high frequency of GNAS mutation indicates that anti-GNAS autoantibody may be used as an early indicator of HCC.
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Affiliation(s)
- Keyan Wang
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
| | - Cuipeng Qiu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
- Department of Epidemiology and Health Statistics & Henan Key Laboratory for Tumor Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Mengtao Xing
- Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Miao Li
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Bofei Wang
- Department of Epidemiology and Health Statistics & Henan Key Laboratory for Tumor Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Hua Ye
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
- Department of Epidemiology and Health Statistics & Henan Key Laboratory for Tumor Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jianxiang Shi
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
| | - Liping Dai
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
| | - Xiao Wang
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
| | - Peng Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
- Department of Epidemiology and Health Statistics & Henan Key Laboratory for Tumor Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
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Pflüger MJ, Jamouss KT, Afghani E, Lim SJ, Rodriguez Franco S, Mayo H, Spann M, Wang H, Singhi A, Lennon AM, Wood LD. Predictive ability of pancreatic cyst fluid biomarkers: A systematic review and meta-analysis. Pancreatology 2023; 23:868-877. [PMID: 37230894 DOI: 10.1016/j.pan.2023.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/10/2023] [Accepted: 05/13/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Mucinous pancreatic cysts harbor the potential to progress to highly lethal pancreatic ductal adenocarcinoma (PDAC). Since these precursor cysts require cancer surveillance or surgical resection, they need to be reliably distinguished from harmless pancreatic cysts. Current clinical and radiographic assessment is imperfect and the value of cyst fluid analysis for differential diagnosis is unclear. Therefore, we set out to investigate the value of cyst fluid biomarkers in distinguishing pancreatic cysts. METHODS We performed a systematic review of the current literature to identify articles that evaluated the diagnostic performance of clinically relevant and promising candidate cyst fluid biomarkers, with a particular emphasis on DNA-based biomarkers. Meta-analysis was performed for biomarkers targeted at identifying cyst type and presence of high-grade dysplasia or PDAC. RESULTS Data from a total of 42 studies was analyzed. Mutations in KRAS and/or GNAS allowed identification of mucinous cysts with a sensitivity of 79% and specificity of 98%. This exceeded the performance of the traditional biomarker carcinoembryonic antigen (CEA; sensitivity 58%, specificity 87%). Mutations in VHL were specific for serous cystadenomas (SCAs; sensitivity 56%, specificity 99%) and help to exclude mucinous cysts. Mutations in CDKN2A, PIK3CA, SMAD4, and TP53 each had high specificities of 97%, 97%, 98%, and 95%, respectively, to identify high-grade dysplasia or PDAC in mucinous cysts. CONCLUSIONS Cyst fluid analysis can be a valuable tool in the characterization of pancreatic cysts, with relevant clinical implications. Our results support the use of DNA-based cyst fluid biomarkers in the multidisciplinary diagnostic work-up of pancreatic cysts.
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Affiliation(s)
- Michael Johannes Pflüger
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Surgery CCM|CVK, Charité, Universitätsmedizin Berlin, Germany; Graduate School of Life Sciences, Utrecht University, The Netherlands
| | - Kevin Tony Jamouss
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Elham Afghani
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, MD, USA
| | - Su Jin Lim
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | - Harrison Mayo
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, MD, USA
| | - Marcus Spann
- Johns Hopkins University School of Medicine, Welch Medical Library, Baltimore, MD, USA
| | - Hao Wang
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Aatur Singhi
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
| | - Anne Marie Lennon
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, MD, USA.
| | - Laura D Wood
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, MD, USA; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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7
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Astbury S, Baskar A, Grove JI, Kaye P, Aravinthan AD, James MW, Clarke C, Aithal GP, Venkatachalapathy SV. Next-generation sequencing of pancreatic cyst wall specimens obtained using micro-forceps for improving diagnostic accuracy. Endosc Int Open 2023; 11:E983-E991. [PMID: 37941539 PMCID: PMC10629470 DOI: 10.1055/a-2163-8805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/15/2023] [Indexed: 11/10/2023] Open
Abstract
Background and study aims Pancreatic cysts are common incidental findings, with an estimated prevalence of 13% to 15% in imaging done for other reasons. Diagnosis often relies on collection of cyst fluid, but tissue sampling using micro-forceps may allow for a more reliable diagnosis and higher yield of DNA for next-generation sequencing (NGS). The primary aim was to assess the performance of NGS in identifying mucinous cyst. The secondary aims were to assess DNA yield between the cyst fluid and cyst wall tissue, complication rate and performance of conventional investigations. Patients and methods Twenty-four patients referred for endoscopic ultrasound were recruited. Biopsies were taken using micro-forceps and the AmpliSeq Cancer Hotspot panel was used for NGS, a polymerase chain reaction assay targeting several hotspots within 50 genes, including GNAS , KRAS and VHL . Results The concentration of DNA extracted from 24 cyst wall samples was significantly higher than in the nine of 24 available matched cyst fluid samples. The sensitivity, specificity, and diagnostic accuracy of NGS for diagnosing mucinous cyst were 93%, 50% and 84%; for standard of care, they were -66.6%, 50% and 63.1%; and for standard of care with NGS, they were 100%, 50%, and 89.4% respectively. Cyst wall biopsy was able to diagnose 19 of 24 cysts (4 high risk, 7 intraductal papillary mucinous neoplasms, 4 cysts of mucinous origin, and 4 benign). Conclusions NGS data correlate well with histology and may aid in diagnosis and risk stratification of pancreatic cysts. Cyst wall biopsy performs well in diagnosing cysts but was inadequate in five of 24 patients.
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Affiliation(s)
- Stuart Astbury
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
| | - Aishwarya Baskar
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
| | - Jane I. Grove
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
| | - Philip Kaye
- Department of Pathology, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Aloysious D. Aravinthan
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
| | - Martin W. James
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
| | - Christopher Clarke
- Department of Radiology, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Guruprasad P. Aithal
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
| | - Suresh Vasan Venkatachalapathy
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
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Nikiforova MN, Wald AI, Spagnolo DM, Melan MA, Grupillo M, Lai YT, Brand RE, O’Broin-Lennon AM, McGrath K, Park WG, Pfau PR, Polanco PM, Kubiliun N, DeWitt J, Easler JJ, Dam A, Mok SR, Wallace MB, Kumbhari V, Boone BA, Marsh W, Thakkar S, Fairley KJ, Afghani E, Bhat Y, Ramrakhiani S, Nasr J, Skef W, Thiruvengadam NR, Khalid A, Fasanella K, Chennat J, Das R, Singh H, Sarkaria S, Slivka A, Gabbert C, Sawas T, Tielleman T, Vanderveldt HD, Tavakkoli A, Smith LM, Smith K, Bell PD, Hruban RH, Paniccia A, Zureikat A, Lee KK, Ongchin M, Zeh H, Minter R, He J, Nikiforov YE, Singhi AD. A Combined DNA/RNA-based Next-Generation Sequencing Platform to Improve the Classification of Pancreatic Cysts and Early Detection of Pancreatic Cancer Arising From Pancreatic Cysts. Ann Surg 2023; 278:e789-e797. [PMID: 37212422 PMCID: PMC10481930 DOI: 10.1097/sla.0000000000005904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
OBJECTIVE We report the development and validation of a combined DNA/RNA next-generation sequencing (NGS) platform to improve the evaluation of pancreatic cysts. BACKGROUND AND AIMS Despite a multidisciplinary approach, pancreatic cyst classification, such as a cystic precursor neoplasm, and the detection of high-grade dysplasia and early adenocarcinoma (advanced neoplasia) can be challenging. NGS of preoperative pancreatic cyst fluid improves the clinical evaluation of pancreatic cysts, but the recent identification of novel genomic alterations necessitates the creation of a comprehensive panel and the development of a genomic classifier to integrate the complex molecular results. METHODS An updated and unique 74-gene DNA/RNA-targeted NGS panel (PancreaSeq Genomic Classifier) was created to evaluate 5 classes of genomic alterations to include gene mutations (e.g., KRAS, GNAS, etc.), gene fusions and gene expression. Further, CEA mRNA ( CEACAM5 ) was integrated into the assay using RT-qPCR. Separate multi-institutional cohorts for training (n=108) and validation (n=77) were tested, and diagnostic performance was compared to clinical, imaging, cytopathologic, and guideline data. RESULTS Upon creation of a genomic classifier system, PancreaSeq GC yielded a 95% sensitivity and 100% specificity for a cystic precursor neoplasm, and the sensitivity and specificity for advanced neoplasia were 82% and 100%, respectively. Associated symptoms, cyst size, duct dilatation, a mural nodule, increasing cyst size, and malignant cytopathology had lower sensitivities (41-59%) and lower specificities (56-96%) for advanced neoplasia. This test also increased the sensitivity of current pancreatic cyst guidelines (IAP/Fukuoka and AGA) by >10% and maintained their inherent specificity. CONCLUSIONS PancreaSeq GC was not only accurate in predicting pancreatic cyst type and advanced neoplasia but also improved the sensitivity of current pancreatic cyst guidelines.
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Affiliation(s)
- Marina N. Nikiforova
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Abigail I. Wald
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Daniel M. Spagnolo
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Melissa A. Melan
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Maria Grupillo
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Yi-Tak Lai
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Randall E. Brand
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Anne Marie O’Broin-Lennon
- The Sol Goldman Pancreatic Cancer Research Center, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Kevin McGrath
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Walter G. Park
- Department of Medicine, Stanford University, Stanford, CA
| | - Patrick R. Pfau
- Department of Medicine, University of Wisconsin, Madison, WI
| | - Patricio M. Polanco
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX
| | - Nisa Kubiliun
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - John DeWitt
- Department of Gastroenterology and Hepatology, Indiana University Health Medical Center, Indianapolis, IN
| | - Jeffrey J. Easler
- Department of Gastroenterology and Hepatology, Indiana University Health Medical Center, Indianapolis, IN
| | - Aamir Dam
- Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, FL
| | - Shaffer R. Mok
- Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, FL
| | - Michael B. Wallace
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Jacksonville, FL
- Sheikh Shakhbout Medical City, Abu Dhabi, UAE
| | - Vivek Kumbhari
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Jacksonville, FL
| | - Brian A. Boone
- Department of Surgery, West Virginia University Health Sciences Center, Morgantown, WV
| | - Wallis Marsh
- Department of Surgery, West Virginia University Health Sciences Center, Morgantown, WV
| | - Shyam Thakkar
- Department of Medicine, Section of Gastroenterology & Hepatology, West Virginia University Health Sciences Center, Morgantown, WV
| | - Kimberly J. Fairley
- Department of Medicine, Section of Gastroenterology & Hepatology, West Virginia University Health Sciences Center, Morgantown, WV
| | - Elham Afghani
- The Sol Goldman Pancreatic Cancer Research Center, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Yasser Bhat
- Department of Gastroenterology, Palo Alto Medical Foundation (PAMF), Mountain View, CA
| | - Sanjay Ramrakhiani
- Department of Gastroenterology, Palo Alto Medical Foundation (PAMF), Mountain View, CA
| | - John Nasr
- Department of Medicine, Wheeling Hospital, West Virginia University Health Sciences Center, Morgantown, WV
| | - Wasseem Skef
- Division of Gastroenterology and Hepatology, Department of Medicine, Loma Linda University Medical Center, Loma Linda, CA
| | - Nikhil R. Thiruvengadam
- Division of Gastroenterology and Hepatology, Department of Medicine, Loma Linda University Medical Center, Loma Linda, CA
| | - Asif Khalid
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Kenneth Fasanella
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Jennifer Chennat
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Rohit Das
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Harkirat Singh
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Savreet Sarkaria
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Adam Slivka
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Charles Gabbert
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Tarek Sawas
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Thomas Tielleman
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | | | - Anna Tavakkoli
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Lynette M. Smith
- Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE
| | - Katelyn Smith
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Phoenix D. Bell
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Ralph H. Hruban
- The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Alessandro Paniccia
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Amer Zureikat
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Kenneth K. Lee
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Melanie Ongchin
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Herbert Zeh
- Department of Clinical Sciences, Surgery, University of Texas Southwestern, Dallas, TX
| | - Rebecca Minter
- Department of Surgery, University of Wisconsin, Madison, WI
| | - Jin He
- The Sol Goldman Pancreatic Cancer Research Center, Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Yuri E. Nikiforov
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Aatur D. Singhi
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
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9
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Pitman MB, Centeno BA, Reid MD, Saeig M, Siddiqui MT, Layfield LJ, Perez-Machado M, Weynand B, Stelow EB, Lozano MD, Fukushima N, Cree IA, Mehrotra R, Schmitt FC, Field AS. A brief review of the WHO reporting system for pancreaticobiliary cytopathology. J Am Soc Cytopathol 2023; 12:243-250. [PMID: 37003924 DOI: 10.1016/j.jasc.2023.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 03/09/2023]
Abstract
The World Health Organization (WHO), the International Academy of Cytology, and the International Agency for Research on Cancer have developed an approach to standardized reporting of pancreaticobiliary cytopathology. The WHO Reporting System for Pancreaticobiliary Cytopathology (WHO System) revises the Papanicolaou Society of Cytopathology (PSC) System for Reporting Pancreaticobiliary Cytology published in 2015 and replaces the 6 PSC categories with 7 categories: "Insufficient/Inadequate/Nondiagnostic"; "Benign/Negative for malignancy"; "Atypical"; "Pancreaticobiliary neoplasm, low risk/grade (PaN-low)"; "Pancreatic neoplasm, high risk/grade (PaN-High)"; "Suspicious for malignancy"; and "Malignant". In the PSC system, there is a single category for "Neoplastic" lesions that includes 2 groups, 1 for benign neoplasms and 1 named "Neoplastic-other", dominated by premalignant intraductal neoplasms primarily intraductal papillary mucinous neoplasms and low-grade malignant neoplasms (pancreatic neuroendocrine tumors (PanNET) and solid pseudopapillary neoplasms (SPN). In the WHO System, benign neoplasms with virtually no risk of malignancy are included in the "Benign" category and low-grade malignancies (PanNET and SPN) are included in the "Malignant" category, as per the 5th edition of the WHO Classification of Digestive System Tumors, while the non-invasive pre-malignant lesions of the ducts are divided by the cytomorphological grade of the epithelium into PaN-low and PaN-high with distinctly different risks of malignancy. Within each category, key diagnostic cytopathologic features and the ancillary studies for diagnostic and prognostic evaluation, as well as the implications of diagnosis for patient care and management, are outlined. Reporting and diagnostic management options recognize the variations in the availability of diagnostic and prognostic ancillary testing modalities in low- and middle-income countries.
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Affiliation(s)
- Martha B Pitman
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
| | | | - Michelle D Reid
- Department of Pathology, Emory University Hospital, Atlanta, Georgia
| | - Mauro Saeig
- Santa Casa Medical School, Sao Paulo, Brazil
| | - Momin T Siddiqui
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York
| | - Lester J Layfield
- Pathology and Anatomic Science Department, University of Missouri, Columbia, Missouri
| | - Miguel Perez-Machado
- Department of Cellular Pathology, Royal Free Hampstead NHS Trust, London, England
| | - Birgit Weynand
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
| | - Edward B Stelow
- Department of Pathology, University of Virginia Hospital, Charlottesville, Virginia
| | - Maria D Lozano
- Department of Pathology, Clinical University of Navarra, Pamplona, Spain
| | - Noriyoshi Fukushima
- Department of Diagnostic Pathology, Jichi Medical University Hospital, Shimotsuke, Japan
| | - Ian A Cree
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
| | - Ravi Mehrotra
- Indian Cancer Genomic Atlas, Centre for Health, Innovation and Policy Foundation, Noida, India
| | - Fernando C Schmitt
- Department of Pathology, Faculty of Medicine of University of Porto, Porto, Portugal
| | - Andrew S Field
- Department of Anatomical Pathology, St Vincent's Hospital, Sydney, and University of New South Wales Sydney and University of Notre Dame, Sydney, Australia
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10
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Triantopoulou C, Gourtsoyianni S, Karakaxas D, Delis S. Intraductal Papillary Mucinous Neoplasm of the Pancreas: A Challenging Diagnosis. Diagnostics (Basel) 2023; 13:2015. [PMID: 37370909 DOI: 10.3390/diagnostics13122015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/31/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Intraductal papillary mucinous neoplasm of the pancreas (IPMN) was classified as a distinct entity from mucinous cystic neoplasm by the WHO in 1995. It represents a mucin-producing tumor that originates from the ductal epithelium and can evolve from slight dysplasia to invasive carcinoma. In addition, different aspects of tumor progression may be seen in the same lesion. Three types are recognized, the branch duct variant, the main duct variant, which shows a much higher prevalence for malignancy, and the mixed-type variant, which combines branch and main duct characteristics. Advances in cross-sectional imaging have led to an increased rate of IPMN detection. The main imaging characteristic of IPMN is the dilatation of the pancreatic duct without the presence of an obstructing lesion. The diagnosis of a branch duct IPMN is based on the proof of its communication with the main pancreatic duct on MRI-MRCP examination. Early identification by imaging of the so-called worrisome features or predictors for malignancy is an important and challenging task. In this review, we will present recent imaging advances in the diagnosis and characterization of different types of IPMNs, as well as imaging tools available for early recognition of worrisome features for malignancy. A critical appraisal of current IPMN management guidelines from both a radiologist's and surgeon's perspective will be made. Special mention is made of complications that might arise during the course of IPMNs as well as concomitant pancreatic neoplasms including pancreatic adenocarcinoma and pancreatic endocrine neoplasms. Finally, recent research on prognostic and predictive biomarkers including radiomics will be discussed.
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Affiliation(s)
| | - Sofia Gourtsoyianni
- 1st Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, Areteion Hospital, 11528 Athens, Greece
| | - Dimitriοs Karakaxas
- Department of Surgery, Konstantopouleio General Hospital, 14233 Athens, Greece
| | - Spiros Delis
- Department of Surgery, Konstantopouleio General Hospital, 14233 Athens, Greece
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11
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Pollini T, Wong P, Maker AV. The Landmark Series: Intraductal Papillary Mucinous Neoplasms of the Pancreas-From Prevalence to Early Cancer Detection. Ann Surg Oncol 2023; 30:1453-1462. [PMID: 36600097 PMCID: PMC9908620 DOI: 10.1245/s10434-022-12870-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 11/14/2022] [Indexed: 01/06/2023]
Abstract
Modern series report a prevalence of pancreatic cysts in the general population of up to 50% in prospective studies. Of these, about half will be pancreatic cystic neoplasms (PCNs) that have varying degrees of malignant potential. Intraductal papillary mucinous neoplasms (IPMNs) of the pancreas are the most common PCNs and are known predecessors of pancreatic adenocarcinoma. Critically, they are one of the only radiographically identifiable precursors of pancreatic cancer and thus provide an opportunity for early cancer detection and surgical resection with curative intent. The combination of high prevalence and potential for malignant degeneration underscore the relevance of discussing the best management of IPMNs and improving the existing standard of care. Landmark data on IPMN prevalence, guidelines, surveillance, biomarkers, and immune landscape are highlighted.
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Affiliation(s)
- Tommaso Pollini
- Division of Surgical Oncology, Department of Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Paul Wong
- Division of Surgical Oncology, Department of Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Ajay V Maker
- Division of Surgical Oncology, Department of Surgery, University of California San Francisco, San Francisco, CA, USA.
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12
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Comparative Performance of Endoscopic Ultrasound-Based Techniques in Patients With Pancreatic Cystic Lesions: A Network Meta-Analysis. Am J Gastroenterol 2023; 118:243-255. [PMID: 36563321 DOI: 10.14309/ajg.0000000000002088] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 11/02/2022] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Evidence on the comparative diagnostic performance of endoscopic ultrasound (EUS)-based techniques for pancreatic cystic lesions (PCLs) is limited. This network meta-analysis comprehensively compared EUS-based techniques for PCL diagnosis. METHODS A comprehensive literature search was performed for all comparative studies assessing the accuracy of 2 or more modalities for PCL diagnosis. The primary outcome was the diagnostic efficacy for mucinous PCLs. Secondary outcomes were the diagnostic efficacy for malignant PCLs, diagnostic success rate, and adverse event rate. A network meta-analysis was conducted using the ANOVA model to assess the diagnostic accuracy of each index. RESULTS Forty studies comprising 3,641 patients were identified. The network ranking of the superiority index for EUS-guided needle-based confocal laser endomicroscopy (EUS-nCLE) and EUS-guided through-the-needle biopsy (EUS-TTNB) were significantly higher than other techniques for differentiating mucinous PCLs; besides, EUS-TTNB was also the optimal technique in identifying malignant PCLs. The evidence was inadequate for EUS-nCLE diagnosing malignant PCLs and contrast-enhanced harmonic EUS diagnosing both mucinous and malignant PCLs. Glucose showed a high sensitivity but low specificity, and molecular analysis (KRAS, GNAS, and KRAS + GNAS mutations) showed a high specificity but low sensitivity for diagnosing mucinous PCLs. Satisfactory results were not obtained during the evaluation of the efficiency of pancreatic cyst fluid (PCF) biomarkers in detecting malignant PCLs. DISCUSSION For centers with relevant expertise and facilities, EUS-TTNB and EUS-nCLE were better choices for the diagnosis of PCLs. Further studies are urgently required for further improving PCF biomarkers and validating the diagnostic performance of the index techniques.
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13
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van Huijgevoort NCM, Halfwerk HBG, Lekkerkerker SJ, Reinten RJ, Ramp F, Fockens P, Besselink MG, Busch OR, van Noesel CJM, van de Vijver MJ, Verheij J, van Hooft JE, Dijk F. Detecting KRAS mutations in pancreatic cystic neoplasms: droplet digital PCR versus targeted next-generation sequencing. HPB (Oxford) 2023; 25:155-159. [PMID: 36328896 DOI: 10.1016/j.hpb.2022.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 10/04/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Nadine C M van Huijgevoort
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Hans B G Halfwerk
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Selma J Lekkerkerker
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Roy J Reinten
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Frederique Ramp
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Paul Fockens
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Marc G Besselink
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Olivier R Busch
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Carel J M van Noesel
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Marc J van de Vijver
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Joanne Verheij
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Jeanin E van Hooft
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Frederike Dijk
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands.
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14
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Takano S, Fukasawa M, Enomoto N. Molecular assessment of endoscopically collected pancreatic juice and duodenal fluid from patients with pancreatic diseases. Dig Endosc 2023; 35:19-32. [PMID: 35665966 DOI: 10.1111/den.14371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 06/01/2022] [Indexed: 01/17/2023]
Abstract
One concern associated with pancreatic diseases is the poor prognosis of pancreatic cancer. Even with advances in diagnostic modalities, risk stratification of premalignant lesions and differentiation of pancreatic cysts are challenging. Pancreatic lesions of concern include intraductal papillary mucinous neoplasms, mucinous cystic neoplasms, serous cystadenomas, pseudocysts, and retention cysts, as well as cystic degeneration of solid tumors such as solid pseudopapillary neoplasms and pancreatic neuroendocrine neoplasms. Pancreatic juice obtained during endoscopic retrograde cholangiopancreatography has previously been used for the detection of KRAS mutation. Recently, duodenal fluid, which can be obtained during the relatively minimally invasive procedures of endoscopic ultrasound (EUS) and esophagogastroduodenoscopy, and cyst fluid collected by EUS-guided fine-needle aspiration (FNA) were used for molecular biological analysis. Furthermore, advanced analytic methods with high sensitivity were used for the detection of single and multiple markers. Early detection of malignant pancreatic tumors and risk stratification of premalignant tumors can be performed using duodenal fluid samples with a single marker with high sensitivity. Technological advances in simultaneous detection of multiple markers allow for the differentiation of cystic pancreatic tumors. One thing to note is that the clinical guidelines do not recommend pancreatic cyst fluid and pancreatic juice (PJ) sampling by EUS-FNA and endoscopic retrograde cholangiopancreatography, respectively, in actual clinical practice, but state that they be performed at experienced facilities, and duodenal fluid sampling is not mentioned in the guidelines. With improved specimen handling and the combination of markers, molecular markers in PJ samples may be used in clinical practice in the near future.
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Affiliation(s)
- Shinichi Takano
- First Department of Internal Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Mitsuharu Fukasawa
- First Department of Internal Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Nobuyuki Enomoto
- First Department of Internal Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
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15
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Paniccia A, Polanco PM, Boone BA, Wald AI, McGrath K, Brand RE, Khalid A, Kubiliun N, O'Broin-Lennon AM, Park WG, Klapman J, Tharian B, Inamdar S, Fasanella K, Nasr J, Chennat J, Das R, DeWitt J, Easler JJ, Bick B, Singh H, Fairley KJ, Sarkaria S, Sawas T, Skef W, Slivka A, Tavakkoli A, Thakkar S, Kim V, Vanderveldt HD, Richardson A, Wallace MB, Brahmbhatt B, Engels M, Gabbert C, Dugum M, El-Dika S, Bhat Y, Ramrakhiani S, Bakis G, Rolshud D, Millspaugh G, Tielleman T, Schmidt C, Mansour J, Marsh W, Ongchin M, Centeno B, Monaco SE, Ohori NP, Lajara S, Thompson ED, Hruban RH, Bell PD, Smith K, Permuth JB, Vandenbussche C, Ernst W, Grupillo M, Kaya C, Hogg M, He J, Wolfgang CL, Lee KK, Zeh H, Zureikat A, Nikiforova MN, Singhi AD. Prospective, Multi-Institutional, Real-Time Next-Generation Sequencing of Pancreatic Cyst Fluid Reveals Diverse Genomic Alterations That Improve the Clinical Management of Pancreatic Cysts. Gastroenterology 2023; 164:117-133.e7. [PMID: 36209796 PMCID: PMC9844531 DOI: 10.1053/j.gastro.2022.09.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 08/22/2022] [Accepted: 09/16/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Next-generation sequencing (NGS) of pancreatic cyst fluid is a useful adjunct in the assessment of patients with pancreatic cyst. However, previous studies have been retrospective or single institutional experiences. The aim of this study was to prospectively evaluate NGS on a multi-institutional cohort of patients with pancreatic cyst in real time. METHODS The performance of a 22-gene NGS panel (PancreaSeq) was first retrospectively confirmed and then within a 2-year timeframe, PancreaSeq testing was prospectively used to evaluate endoscopic ultrasound-guided fine-needle aspiration pancreatic cyst fluid from 31 institutions. PancreaSeq results were correlated with endoscopic ultrasound findings, ancillary studies, current pancreatic cyst guidelines, follow-up, and expanded testing (Oncomine) of postoperative specimens. RESULTS Among 1933 PCs prospectively tested, 1887 (98%) specimens from 1832 patients were satisfactory for PancreaSeq testing. Follow-up was available for 1216 (66%) patients (median, 23 months). Based on 251 (21%) patients with surgical pathology, mitogen-activated protein kinase/GNAS mutations had 90% sensitivity and 100% specificity for a mucinous cyst (positive predictive value [PPV], 100%; negative predictive value [NPV], 77%). On exclusion of low-level variants, the combination of mitogen-activated protein kinase/GNAS and TP53/SMAD4/CTNNB1/mammalian target of rapamycin alterations had 88% sensitivity and 98% specificity for advanced neoplasia (PPV, 97%; NPV, 93%). Inclusion of cytopathologic evaluation to PancreaSeq testing improved the sensitivity to 93% and maintained a high specificity of 95% (PPV, 92%; NPV, 95%). In comparison, other modalities and current pancreatic cyst guidelines, such as the American Gastroenterology Association and International Association of Pancreatology/Fukuoka guidelines, show inferior diagnostic performance. The sensitivities and specificities of VHL and MEN1/loss of heterozygosity alterations were 71% and 100% for serous cystadenomas (PPV, 100%; NPV, 98%), and 68% and 98% for pancreatic neuroendocrine tumors (PPV, 85%; NPV, 95%), respectively. On follow-up, serous cystadenomas with TP53/TERT mutations exhibited interval growth, whereas pancreatic neuroendocrine tumors with loss of heterozygosity of ≥3 genes tended to have distant metastasis. None of the 965 patients who did not undergo surgery developed malignancy. Postoperative Oncomine testing identified mucinous cysts with BRAF fusions and ERBB2 amplification, and advanced neoplasia with CDKN2A alterations. CONCLUSIONS PancreaSeq was not only sensitive and specific for various pancreatic cyst types and advanced neoplasia arising from mucinous cysts, but also reveals the diversity of genomic alterations seen in pancreatic cysts and their clinical significance.
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Affiliation(s)
- Alessandro Paniccia
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Patricio M Polanco
- Department of Clinical Sciences, Surgery, University of Texas Southwestern, Dallas, Texas
| | - Brian A Boone
- Department of Surgery, West Virginia University Health Sciences Center, Morgantown, West Virginia
| | - Abigail I Wald
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Kevin McGrath
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Randall E Brand
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Asif Khalid
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
| | - Nisa Kubiliun
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Anne Marie O'Broin-Lennon
- The Sol Goldman Pancreatic Cancer Research Center, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Walter G Park
- Department of Medicine, Stanford University, Stanford, California
| | - Jason Klapman
- Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Benjamin Tharian
- Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Sumant Inamdar
- Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Kenneth Fasanella
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - John Nasr
- Department of Medicine, Wheeling Hospital, West Virginia University Health Sciences Center, Morgantown, West Virginia
| | - Jennifer Chennat
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Rohit Das
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - John DeWitt
- Department of Gastroenterology and Hepatology, Indiana University Health Medical Center, Indianapolis, Indiana
| | - Jeffrey J Easler
- Department of Gastroenterology and Hepatology, Indiana University Health Medical Center, Indianapolis, Indiana
| | - Benjamin Bick
- Department of Gastroenterology and Hepatology, Indiana University Health Medical Center, Indianapolis, Indiana
| | - Harkirat Singh
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Kimberly J Fairley
- Department of Medicine, Section of Gastroenterology & Hepatology, West Virginia University Health Sciences Center, Morgantown, West Virginia
| | - Savreet Sarkaria
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Tarek Sawas
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Wasseem Skef
- Department of Medicine, Division of Gastroenterology and Hepatology, Loma Linda University Medical Center, Loma Linda, California
| | - Adam Slivka
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Anna Tavakkoli
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Shyam Thakkar
- Department of Medicine, Section of Gastroenterology & Hepatology, West Virginia University Health Sciences Center, Morgantown, West Virginia
| | - Victoria Kim
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | | | | | - Michael B Wallace
- Department of Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida; Sheikh Shakhbout Medical City, Abu Dhabi, United Arab Emirates
| | - Bhaumik Brahmbhatt
- Department of Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida
| | - Megan Engels
- Department of Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida
| | - Charles Gabbert
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Mohannad Dugum
- Digestive Health Center, Essentia Health-Duluth Clinic, Duluth, Minnesota
| | - Samer El-Dika
- Department of Medicine, Stanford University, Stanford, California
| | - Yasser Bhat
- Department of Gastroenterology, Palo Alto Medical Foundation (PAMF), Mountain View, California
| | - Sanjay Ramrakhiani
- Department of Gastroenterology, Palo Alto Medical Foundation (PAMF), Mountain View, California
| | | | | | | | - Thomas Tielleman
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Carl Schmidt
- Department of Surgery, West Virginia University Health Sciences Center, Morgantown, West Virginia
| | - John Mansour
- Department of Clinical Sciences, Surgery, University of Texas Southwestern, Dallas, Texas
| | - Wallis Marsh
- Department of Surgery, West Virginia University Health Sciences Center, Morgantown, West Virginia
| | - Melanie Ongchin
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Barbara Centeno
- Department of Pathology, Moffitt Cancer Center, Tampa, Florida
| | - Sara E Monaco
- Department of Pathology, Geisinger Medical Center, Danville, Pennsylvania
| | - N Paul Ohori
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Sigfred Lajara
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Elizabeth D Thompson
- The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Ralph H Hruban
- The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Phoenix D Bell
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Katelyn Smith
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jennifer B Permuth
- Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Christopher Vandenbussche
- The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Wayne Ernst
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Maria Grupillo
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Cihan Kaya
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Melissa Hogg
- Department of Surgery, NorthShore University Health System, Chicago, Illinois
| | - Jin He
- The Sol Goldman Pancreatic Cancer Research Center, Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Christopher L Wolfgang
- The Sol Goldman Pancreatic Cancer Research Center, Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland; Department of Surgery, NYU Langone Health, New York, New York
| | - Kenneth K Lee
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Herbert Zeh
- Department of Clinical Sciences, Surgery, University of Texas Southwestern, Dallas, Texas
| | - Amer Zureikat
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Marina N Nikiforova
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
| | - Aatur D Singhi
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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16
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Molecular Analysis of Pancreatic Cyst Fluid for the Management of Intraductal Papillary Mucinous Neoplasms. Diagnostics (Basel) 2022; 12:diagnostics12112573. [PMID: 36359417 PMCID: PMC9689264 DOI: 10.3390/diagnostics12112573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/13/2022] [Accepted: 10/19/2022] [Indexed: 12/03/2022] Open
Abstract
Pancreatic cancer is one of the most lethal human cancers. Early detection and diagnosis of precursor lesions for pancreatic malignancy is essential to improve the morbidity and mortality associated with this diagnosis. Of the cystic precursor lesions, branch duct intraductal papillary mucinous neoplasm (IPMN) is the most frequently identified lesion and has a wide range of malignant potential. Currently, Carcinogenic embryonic antigen (CEA) levels in the cyst fluid and cytology are the two most often utilized tools to diagnose these lesions; however, their diagnostic and risk stratification capabilities are somewhat limited. Within the last decade, the use of endoscopic ultrasound-guided fine-needle aspiration has opened the door for molecular analysis of cystic fluid as an option to enhance both the diagnosis and risk stratification of these lesions. The first step is to differentiate branch duct IPMNs from other lesions. KRAS and GNAS alterations have been shown to be accurate markers for this purpose. Following cyst type identification, mutational analysis, telomere fusion, microRNAs, long non-coding RNA, and DNA methylation have been identified as potential targets for stratifying malignant potential using the cystic fluid. In this review, we will examine the various targets of cyst fluid molecular analysis and their utility in the diagnosis and risk stratification of branch duct IPMNs.
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17
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Abstract
Early detection of high-risk pancreatic cystic lesions enables potentially curative surgical resection, and early detection of lesions without worrisome features may lead to appropriate surveillance. Regrettably, differentiating premalignant and malignant cysts from nonmalignant ones remains challenging. However, emerging additional diagnostic tools, including the needle biopsy with microforceps and needle-based confocal laser endomicroscopy, are of exciting potential along with cyst fluid analysis".
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Affiliation(s)
- Sahin Coban
- Department of Gastroenterology, Mount Auburn Hospital, 330 Mt Auburn St, Cambridge, MA 02138, USA.
| | - Omer Basar
- Department of Gastroenterology, The University of Missouri, Columbia, MO 65211, USA
| | - William R Brugge
- Department of Gastroenterology, Harvard Medical School, Mount Auburn Hospital, 330 Mt Auburn St, Cambridge, MA 02138, USA
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Sharma RK, Bush N, Rana SS, Srinivasan R, Nada R, Gupta R, Rana S, Singh T. Lower cyst fluid carcinoembryonic antigen cutoff is helpful in the differential diagnosis of mucinous versus non-mucinous pancreatic cysts. Indian J Gastroenterol 2022; 41:397-404. [PMID: 36057043 DOI: 10.1007/s12664-022-01269-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 06/02/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIM Pancreatic cystic lesions (PCLs) are being diagnosed with increased frequency and have varying neoplastic potential. We conducted this multimodal, prospective study to evaluate the role of tumor cytology and molecular markers to differentiate PCL subtypes. METHODS Consecutive undiagnosed patients with PCLs (n = 100, mean age: 50.37 years; 41% males) were prospectively studied. Cyst fluid carcinoembryonic antigen (CEA), CA19.9, CA125, CA72.4, and vascular endothelial growth factor-alpha (VEGF-α) levels were measured by quantitative enzyme-linked immunosorbent assay (ELISA) method. Mutational analysis of the KRAS gene (exon 2, Codon 12 and 13) and GNAS gene (Exon 8, Codon 201) were performed by Sanger's sequencing. RESULTS The mean cyst size was 4.32 ± 2.4 cm. Fluid cytology revealed definitive diagnosis in 21 (22.3%) patients. All malignant PCLs could be identified on cytology whereas 10/14 (71%) non-malignant mucinous PCLs could also be identified on cytology based on mucin staining. Among the tested tumor markers, cyst fluid CEA had the best diagnostic performance for differentiation between mucinous and non-mucinous PCLs (AUC 0.933 [95% CI 0.86-0.91]). At a cyst fluid CEA cutoff level of 45.0 ng/mL, the sensitivity, specificity, positive predictive value, and negative predictive value for differentiation between mucinous and non-mucinous cysts were 88.5%, 96.8%, 92.0%, and 95.3%, respectively (p < 0.05). KRAS and GNAS mutation had no significant diagnostic benefit in comparison to fluid cytology and CEA levels. CONCLUSIONS Fluid CEA at a lower cutoff of 45 ng/mL is the most accurate marker to differentiate between mucinous and non-mucinous PCL. The KRAS and GNAS mutational analysis does not improve upon the diagnostic performance of fluid cytology and tumor markers.
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Affiliation(s)
- Ravi Kumar Sharma
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Nikhil Bush
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Surinder Singh Rana
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India.
| | - Radhika Srinivasan
- Department of Cytology and Gynecology Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Ritambhra Nada
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Rajesh Gupta
- Department of Surgical Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Satyavati Rana
- Department of Community Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Tarundeep Singh
- Department of Community Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
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Miki A, Matsuda Y, Aida J, Watanabe J, Sanada Y, Sakuma Y, Lefor AK, Fukushima N, Sata N, Arai T, Takubo K, Ishiwata T. Telomere Attrition in Intraductal Papillary Mucinous Neoplasms of the Pancreas Associated With Carcinogenesis and Aging. Pancreas 2022; 51:678-683. [PMID: 36206470 DOI: 10.1097/mpa.0000000000002081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES It is challenging to preoperatively distinguish malignant and benign forms of intraductal papillary mucinous neoplasms (IPMNs) of the pancreas. The aims of this study were to investigate whether telomere length is associated with pathological grade of IPMNs and age and to clarify the utility of telomere length as a marker to identify malignant IPMNs. METHODS Pancreas tissue was obtained from 28 patients after resection. We measured the telomere lengths of tumor cells in IPMNs and normal duct cells by quantitative fluorescence in situ hybridization. The association of normalized telomere-centromere ratio (NTCR) to pathological grade of IPMNs and age were determined. RESULTS The NTCR showed a gradual decrease with increasing pathological grade of IPMNs. The NTCR in intermediate- and high-grade dysplasia and adenocarcinoma lesions was significantly shorter than in normal pancreatic ducts (P < 0.05). In multivariate analysis, telomere length was most associated with carcinogenesis. When the cutoff value of NTCR was set to 0.74, the sensitivity for detection of high-grade dysplasia and adenocarcinoma was 82.8%, with a specificity of 87.5%. CONCLUSIONS Telomere shortening occurs with carcinogenesis and aging. A significant reduction of telomere length in IPMNs may be useful for surgical decision making.
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Affiliation(s)
| | - Yoko Matsuda
- Oncology Pathology, Department of Pathology and Host-Defense, Faculty of Medicine, Kagawa University, Kagawa
| | - Junko Aida
- Division of Aging and Carcinogenesis, Research Team for Geriatric Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo
| | - Jun Watanabe
- From the Division of Gastroenterological, General and Transplant Surgery, Department of Surgery, Jichi Medical University, Tochigi
| | - Yukihiro Sanada
- From the Division of Gastroenterological, General and Transplant Surgery, Department of Surgery, Jichi Medical University, Tochigi
| | - Yasunaru Sakuma
- From the Division of Gastroenterological, General and Transplant Surgery, Department of Surgery, Jichi Medical University, Tochigi
| | - Alan K Lefor
- From the Division of Gastroenterological, General and Transplant Surgery, Department of Surgery, Jichi Medical University, Tochigi
| | | | - Naohiro Sata
- From the Division of Gastroenterological, General and Transplant Surgery, Department of Surgery, Jichi Medical University, Tochigi
| | - Tomio Arai
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan
| | - Kaiyo Takubo
- Division of Aging and Carcinogenesis, Research Team for Geriatric Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo
| | - Toshiyuki Ishiwata
- Division of Aging and Carcinogenesis, Research Team for Geriatric Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo
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20
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Yamada D, Kobayashi S, Takahashi H, Yoshioka T, Iwagami Y, Tomimaru Y, Shigekawa M, Akita H, Noda T, Asaoka T, Gotoh K, Tanemura M, Doki Y, Eguchi H. Pancreatic CT density is an optimal imaging biomarker for earlier detection of malignancy in the pancreas with intraductal papillary mucinous neoplasm. Pancreatology 2022; 22:488-496. [PMID: 35396159 DOI: 10.1016/j.pan.2022.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/04/2022] [Accepted: 03/22/2022] [Indexed: 12/11/2022]
Abstract
BACKGROUND Intraductal papillary mucinous neoplasms (IPMNs) are typically detected as incidental findings by computed tomography (CT); however, the conventional surveillance is not valid for the early detection of concomitant pancreatic cancer. The pancreas of IPMN is often accompanied by fatty infiltration in the parenchyma, and pancreatic fatty infiltration could be evaluated by pancreatic CT density (pancreatic index, PI). We aimed to investigate whether PI could be an imaging biomarker for the early prediction of malignancies in the pancreas with IPMN. METHODS Two different cohorts were investigated. (Investigation cohort): A total of 1137 patients with initially low-risk IPMN were compensated by initial IPMN findings, and 2 groups (malignancy/possible benign, 50 cases each) were investigated for yearly changes in PI and for the cutoff value of PI indicating the development of malignancies. (Validation cohort): To validate the cutoff value, 256 patients radiologically suspected of having IPMNs were investigated. RESULTS (Investigation-cohort): The malignancy group showed a gradual decrease in PI every year, and PI significantly differed among the 2 groups 1 year prior to the last investigation. The cutoff value of PI was set at 0.65. (Validation-cohort): A total of 55% of the patients with a PI below the cutoff value had malignancy in the pancreas, including concomitant pancreatic cancer, and the cutoff value was the most significant risk factors for the development of malignancies in the pancreas compared to the conventional risk factors for IPMN. CONCLUSIONS Decreasing PI would be an optimal imaging biomarker for earlier detection of malignancies in the pancreas with IPMN.
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Affiliation(s)
- Daisaku Yamada
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Shogo Kobayashi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan.
| | - Hidenori Takahashi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Teppei Yoshioka
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Yoshifumi Iwagami
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Yoshito Tomimaru
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Minoru Shigekawa
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Hirofumi Akita
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Takehiro Noda
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Tadafumi Asaoka
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan; Department of Surgery, Osaka Police Hospital, Tennoji-ku Kitayamacho 10-31, Osaka, 543-0035, Japan
| | - Kunihito Gotoh
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Masahiro Tanemura
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan; Department of Gastroenterological Surgery, Rinku General Medical Center, Rinku-Ourai-Kita 2-23, Izumisano, Osaka, 598-8577, Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Hidetoshi Eguchi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
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Diagnostic Performance of Pancreatic Cytology with the Papanicolaou Society of Cytopathology System: A Systematic Review, before Shifting into the Upcoming WHO International System. Int J Mol Sci 2022; 23:ijms23031650. [PMID: 35163571 PMCID: PMC8835850 DOI: 10.3390/ijms23031650] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/19/2022] [Accepted: 01/28/2022] [Indexed: 02/01/2023] Open
Abstract
The Papanicolaou Society of Cytopathology (PSC) reporting system classifies pancreatobiliary samples into six categories (I–VI), providing guidance for personalized management. As the World Health Organization (WHO) has been preparing an updated reporting system for pancreatobiliary cytopathology, this systematic review aimed to evaluate the risk of malignancy (ROM) of each PSC category, also the sensitivity and specificity of pancreatic FNA cytology using the current PSC system. Five databases were investigated with a predefined search algorithm. Inclusion and exclusion criteria were applied to select the eligible studies for subsequent data extraction. A study quality assessment was also performed. Eight studies were included in the qualitative analysis. The ROM of the PSC categories I, II, III, IV, V, VI were in the ranges of 8–50%, 0–40%, 28–100%, 0–31%, 82–100%, and 97–100%, respectively. Notably, the ROM IVB (“neoplastic—benign”) subcategory showed a 0% ROM. Four of the included studies reported separately the ROMs for the IVO subcategory (“neoplastic—other”; its overall ROM ranged from 0 to 34%) with low (LGA) and high-grade atypia (HGA). ROM for LGA ranged from 4.3 to 19%, whereas ROM for HGA from 64 to 95.2%. When the subcategory IVO with HGA was considered as cytologically positive, together with the categories V and VI, there was a higher sensitivity of pancreatic cytology, at minimal expense of the specificity. Evidence suggests the proposed WHO international system changes—shifting the IVB entities into the “benign/negative for malignancy” category and establishing two new categories, the “pancreatic neoplasm, low-risk/grade” and “pancreatic neoplasm, high-risk/grade”—could stratify pancreatic neoplasms more effectively than the current PSC system.
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22
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Luthra A, Hart PA, Papachristou GI, Porter K, Dillhoff ME, Manilchuk A, Cloyd JM, Pawlik TM, Tsung A, Conwell DL, Krishna SG. Cost-Benefit Analysis and Resource Implications of Endoscopic Ultrasound-Guided Confocal Endomicroscopy in Pancreatic Cysts. TECHNIQUES AND INNOVATIONS IN GASTROINTESTINAL ENDOSCOPY 2022; 24:35-44. [DOI: 10.1016/j.tige.2021.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2023]
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23
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Gao J, Han F, Wang X, Duan S, Zhang J. Multi-Phase CT-Based Radiomics Nomogram for Discrimination Between Pancreatic Serous Cystic Neoplasm From Mucinous Cystic Neoplasm. Front Oncol 2021; 11:699812. [PMID: 34926238 PMCID: PMC8672034 DOI: 10.3389/fonc.2021.699812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 11/15/2021] [Indexed: 12/25/2022] Open
Abstract
Purpose This study aimed to develop and verify a multi-phase (MP) computed tomography (CT)-based radiomics nomogram to differentiate pancreatic serous cystic neoplasms (SCNs) from mucinous cystic neoplasms (MCNs), and to compare the diagnostic efficacy of radiomics models for different phases of CT scans. Materials and Methods A total of 170 patients who underwent surgical resection between January 2011 and December 2018, with pathologically confirmed pancreatic cystic neoplasms (SCN=115, MCN=55) were included in this single-center retrospective study. Radiomics features were extracted from plain scan (PS), arterial phase (AP), and venous phase (VP) CT scans. Algorithms were performed to identify the optimal features to build a radiomics signature (Radscore) for each phase. All features from these three phases were analyzed to develop the MP-Radscore. A combined model comprised the MP-Radscore and imaging features from which a nomogram was developed. The accuracy of the nomogram was evaluated using receiver operating characteristic (ROC) curves, calibration tests, and decision curve analysis. Results For each scan phase, 1218 features were extracted, and the optimal ones were selected to construct the PS-Radscore (11 features), AP-Radscore (11 features), and VP-Radscore (12 features). The MP-Radscore (14 features) achieved better performance based on ROC curve analysis than any single phase did [area under the curve (AUC), training cohort: MP-Radscore 0.89, PS-Radscore 0.78, AP-Radscore 0.83, VP-Radscore 0.85; validation cohort: MP-Radscore 0.88, PS-Radscore 0.77, AP-Radscore 0.83, VP-Radscore 0.84]. The combination nomogram performance was excellent, surpassing those of all other nomograms in both the training cohort (AUC, 0.91) and validation cohort (AUC, 0.90). The nomogram also performed well in the calibration and decision curve analyses. Conclusions Radiomics for arterial and venous single-phase models outperformed the plain scan model. The combination nomogram that incorporated the MP-Radscore, tumor location, and cystic number had the best discriminatory performance and showed excellent accuracy for differentiating SCN from MCN.
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Affiliation(s)
- Jiahao Gao
- Department of Radiology, Huashan Hospital North, Fudan University, Shanghai, China.,Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Fang Han
- Department of Radiology, Huashan Hospital North, Fudan University, Shanghai, China.,Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaoshuang Wang
- Department of Radiology, Huashan Hospital North, Fudan University, Shanghai, China
| | - Shaofeng Duan
- Department of Life Sciences, GE Healthcare, Shanghai, China
| | - Jiawen Zhang
- Department of Radiology, Huashan Hospital North, Fudan University, Shanghai, China.,Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
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24
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McCarty TR, Garg R, Rustagi T. Pancreatic cyst fluid glucose in differentiating mucinous from nonmucinous pancreatic cysts: a systematic review and meta-analysis. Gastrointest Endosc 2021; 94:698-712.e6. [PMID: 33964311 DOI: 10.1016/j.gie.2021.04.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/27/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Recently, low levels of intracystic glucose acquired with EUS-guided pancreatic cyst fluid sampling have been shown to help to differentiate mucinous from nonmucinous cystic neoplasms. The aim of this study was to perform a systematic review and meta-analysis to evaluate the diagnostic characteristics of pancreatic cyst fluid glucose compared with carcinoembryonic antigen (CEA) for pancreatic cystic lesions. METHODS Individualized searches were developed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses and Meta-Analysis of Observational Studies in Epidemiology guidelines and meta-analysis analyzed according to Cochrane Diagnostic Test Accuracy working group methodology. A bivariate model was used to compute pooled sensitivity and specificity, likelihood ratio, diagnostic odds ratio, and summary receiver operating characteristics curve for intracystic glucose or CEA alone or combination testing. RESULTS Eight studies (609 lesions; mean patient age, 63.56 ± 2.75 years; 60.36% women) were included. The pooled sensitivity for pancreatic cyst fluid glucose was significantly higher compared with CEA alone (91% [95% confidence interval {CI}, 88-94; I2 = .00] vs 56% [95% CI, 46-66; I2 = 537.14]; P < .001) with no difference in specificity (86% [95% CI, 81-90; I2 = 24.16] vs 96% [95% CI, 90-99; I2 = 38.06]; P > .05). Diagnostic accuracy was significantly higher for pancreatic cyst fluid glucose versus CEA alone (94% [95% CI, 91-96] vs 85% [95% CI, 82-88]; P < .001). Combination testing with pancreatic cyst fluid glucose and CEA did not improve the diagnostic accuracy compared with glucose alone (97% [95% CI, 95-98] vs 94% [95% CI, 91-96]; P > .05). CONCLUSIONS Low pancreatic cyst fluid glucose was associated with a high sensitivity and specificity with significantly improved diagnostic accuracy compared with CEA alone for the diagnosis of mucinous versus nonmucinous pancreatic cystic lesions.
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Affiliation(s)
- Thomas R McCarty
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Rajat Garg
- Department of Hospital Medicine, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Tarun Rustagi
- Division of Gastroenterology and Hepatology, University of New Mexico, Albuquerque, New Mexico, USA
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25
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Lee LS. Updates in diagnosis and management of pancreatic cysts. World J Gastroenterol 2021; 27:5700-5714. [PMID: 34629795 PMCID: PMC8473602 DOI: 10.3748/wjg.v27.i34.5700] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/14/2021] [Accepted: 08/20/2021] [Indexed: 02/06/2023] Open
Abstract
Incidental pancreatic cysts are commonly encountered with some cysts having malignant potential. The most common pancreatic cystic neoplasms include serous cystadenoma, mucinous cystic neoplasm and intraductal papillary mucinous neoplasm. Risk stratifying pancreatic cysts is important in deciding whether patients may benefit from endoscopic ultrasound (EUS) or surgical resection. Surgery should be reserved for patients with malignant cysts or cysts at high risk for developing malignancy as suggested by various risk features including solid mass, nodule and dilated main pancreatic duct. EUS may supplement magnetic resonance imaging findings for cysts that remain indeterminate or have concerning features on imaging. Various cyst fluid markers including carcinoembryonic antigen, glucose, amylase, cytology, and DNA markers help distinguish mucinous from nonmucinous cysts. This review will guide the practicing gastroenterologist in how to evaluate incidental pancreatic cysts and when to consider referral for EUS or surgery. For presumed low risk cysts, surveillance strategies will be discussed. Managing pancreatic cysts requires an individualized approach that is directed by the various guidelines.
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Affiliation(s)
- Linda S Lee
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Boston, MA 02115, United States
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26
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Cystic pancreatic lesions: MR imaging findings and management. Insights Imaging 2021; 12:115. [PMID: 34374885 PMCID: PMC8355307 DOI: 10.1186/s13244-021-01060-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 07/17/2021] [Indexed: 12/14/2022] Open
Abstract
Cystic pancreatic lesions (CPLs) are frequently casual findings in radiological examinations performed for other reasons in patients with unrelated symptoms. As they require different management according to their histological nature, differential diagnosis is essential. Radiologist plays a key role in the diagnosis and management of these lesions as imaging is able to correctly characterize most of them and thus address to a correct management. The first step for a correct characterization is to look for a communication between the CPLs and the main pancreatic duct, and then, it is essential to evaluate the morphology of the lesions. Age, sex and a history of previous pancreatic pathologies are important information to be used in the differential diagnosis. As some CPLs with different pathologic backgrounds can show the same morphological findings, differential diagnosis can be difficult, and thus, the final diagnosis can require other techniques, such as endoscopic ultrasound, endoscopic ultrasound-fine needle aspiration and endoscopic ultrasound-through the needle biopsy, and multidisciplinary management is important for a correct management.
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O'Neill RS, Stoita A. Biomarkers in the diagnosis of pancreatic cancer: Are we closer to finding the golden ticket? World J Gastroenterol 2021; 27:4045-4087. [PMID: 34326612 PMCID: PMC8311531 DOI: 10.3748/wjg.v27.i26.4045] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/24/2021] [Accepted: 06/15/2021] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer (PC) is a leading cause of cancer related mortality on a global scale. The disease itself is associated with a dismal prognosis, partly due to its silent nature resulting in patients presenting with advanced disease at the time of diagnosis. To combat this, there has been an explosion in the last decade of potential candidate biomarkers in the research setting in the hope that a diagnostic biomarker may provide a glimmer of hope in what is otherwise quite a substantial clinical dilemma. Currently, serum carbohydrate antigen 19-9 is utilized in the diagnostic work-up of patients diagnosed with PC however this biomarker lacks the sensitivity and specificity associated with a gold-standard marker. In the search for a biomarker that is both sensitive and specific for the diagnosis of PC, there has been a paradigm shift towards a focus on liquid biopsy and the use of diagnostic panels which has subsequently proved to have efficacy in the diagnosis of PC. Currently, promising developments in the field of early detection on PC using diagnostic biomarkers include the detection of microRNA (miRNA) in serum and circulating tumour cells. Both these modalities, although in their infancy and yet to be widely accepted into routine clinical practice, possess merit in the early detection of PC. We reviewed over 300 biomarkers with the aim to provide an in-depth summary of the current state-of-play regarding diagnostic biomarkers in PC (serum, urinary, salivary, faecal, pancreatic juice and biliary fluid).
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Affiliation(s)
- Robert S O'Neill
- Department of Gastroenterology, St Vincent's Hospital Sydney, Sydney 2010, Australia
- St George and Sutherland Clinical School, Faculty of Medicine, University of New South Wales, Sydney 2010, Australia
| | - Alina Stoita
- Department of Gastroenterology, St Vincent's Hospital Sydney, Sydney 2010, Australia
- St Vincent’s Clinical School, Faculty of Medicine, University of New South Wales, Sydney 2010, Australia
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Ma G, Li G, Xiao Z, Gou A, Xu Y, Song S, Guo K, Liu Z. Narrative review of intraductal papillary mucinous neoplasms: pathogenesis, diagnosis, and treatment of a true precancerous lesion. Gland Surg 2021; 10:2313-2324. [PMID: 34422602 PMCID: PMC8340339 DOI: 10.21037/gs-21-450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/14/2021] [Indexed: 12/09/2022]
Abstract
OBJECTIVE Although considerable progress has been made in our understanding of intraductal papillary mucinous neoplasm (IPMN) of the pancreas, there are still some problems to be solved. BACKGROUND IPMN is one of the most important precancerous lesions of pancreatic cancer, but the relationship between IPMN and pancreatic cancer, and the specific mechanism of the development from IPMN to invasive carcinoma, remain to be explored in depth. With the development of imaging, the detection rate of IPMN has been greatly improved. However, the degree of malignancy of IPMN is difficult to assess, and its classification criteria and surgical treatment strategies are still controversial. Therefore, there is an urgent need for the best treatment plan for IPMN and research that can better predict IPMN recurrence and tumor malignancy. METHODS From the online database Web of Science (https://webofknowledge.com/) and PubMed (https://pubmed.ncbi.nlm.nih.gov/), we use specific retrieval strategies to retrieve relevant articles based on the topics we discussed, and we review and discuss them. CONCLUSIONS This paper discusses the related research and progress of IPMN in recent years to improve the understanding of the incidence, diagnosis, treatment, and prognosis of this disease. The follow-up and monitoring of IPMN is particularly important, but the specific strategy also remains controversial.
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Affiliation(s)
- Gang Ma
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
| | - Guichen Li
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
| | - Zhihuan Xiao
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
| | - Anjiang Gou
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
| | - Yuanhong Xu
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
| | - Shaowei Song
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
| | - Kejian Guo
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
| | - Zhe Liu
- Department of Pancreatic-Biliary Surgery, First Hospital of China Medical University, Shenyang, China
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Ansari D, Amini J, Edman M, Andersson R. IPMN of the pancreas - does histological subtyping allow for improved stratification and follow-up? Scand J Gastroenterol 2021; 56:862-864. [PMID: 34033516 DOI: 10.1080/00365521.2021.1922745] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Daniel Ansari
- Department of Surgery, Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Jacob Amini
- Department of Surgery, Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Maja Edman
- Department of Surgery, Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Roland Andersson
- Department of Surgery, Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
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Early detection of pancreatic cancer using DNA-based molecular approaches. Nat Rev Gastroenterol Hepatol 2021; 18:457-468. [PMID: 34099908 DOI: 10.1038/s41575-021-00470-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/13/2021] [Indexed: 02/08/2023]
Abstract
Due to its poor prognosis and the late stage at which it is typically diagnosed, early detection of pancreatic cancer is a pressing clinical problem. Advances in genomic analysis of human pancreatic tissue and other biospecimens such as pancreatic cyst fluid, pancreatic juice and blood have opened the possibility of DNA-based molecular approaches for early detection of pancreatic cancer. In this Review, we discuss and focus on the pathological and molecular features of precancerous lesions of the pancreas, including pancreatic intraepithelial neoplasia, intraductal papillary mucinous neoplasm and mucinous cystic neoplasm, which are target lesions of early detection approaches. We also discuss the most prevalent genetic alterations in these precancerous lesions, including somatic mutations in the oncogenes KRAS and GNAS as well as tumour suppressor genes CDKN2A, TP53 and SMAD4. We highlight the latest discoveries related to genetic heterogeneity and multifocal neoplasia in precancerous lesions. In addition, we review specific approaches, challenges and clinically available assays for early detection of pancreatic cancer using DNA-based molecular techniques. Although detection and risk stratification of precancerous pancreatic neoplasms are difficult problems, progress in this field highlights the promise of molecular approaches for improving survival of patients with this disease.
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Okasha HH, Awad A, El-meligui A, Ezzat R, Aboubakr A, AbouElenin S, El-Husseiny R, Alzamzamy A. Cystic pancreatic lesions, the endless dilemma. World J Gastroenterol 2021; 27:2664-2680. [PMID: 34135548 PMCID: PMC8173383 DOI: 10.3748/wjg.v27.i21.2664] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/14/2021] [Accepted: 05/10/2021] [Indexed: 02/06/2023] Open
Abstract
Cystic pancreatic lesions involve a wide variety of pathological entities that include neoplastic and non-neoplastic lesions. The proper diagnosis, differentiation, and staging of these cystic lesions are considered a crucial issue in planning further management. There are great challenges for their diagnostic models. In our time, new emerging methods for this diagnosis have been discovered. Endoscopic ultrasonography-guided fine-needle aspiration cytology with chemical and molecular analysis of cyst fluid and EUS-guided fine needle-based confocal laser endomicroscopy, through the needle microforceps biopsy, and single-operator cholangioscopy/pancreatoscopy are promising methods that have been used in the diagnosis of cystic pancreatic lesions. Hereby we discuss the diagnosis of cystic pancreatic lesions and the benefits of various diagnostic models.
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Affiliation(s)
- Hussein Hassan Okasha
- Department of Internal Medicine and Gastroenterology, Hepatology Unit, Kasr Al-Aini Hospitals, Cairo University, Cairo 11562, Egypt
| | - Abeer Awad
- Department of Internal Medicine and Gastroenterology, Hepatology Unit, Kasr Al-Aini Hospitals, Cairo University, Cairo 11562, Egypt
| | - Ahmed El-meligui
- Department of Internal Medicine and Gastroenterology, Hepatology Unit, Kasr Al-Aini Hospitals, Cairo University, Cairo 11562, Egypt
| | - Reem Ezzat
- Department of Internal Medicine and Gastroenterology, Hepatology Unit, Assuit University, Assuit 71515, Egypt
| | - Ashraf Aboubakr
- Department of Gastroenterology and Hepatology, Maadi Armed Forces Medical Complex, Military Medical Academy, Cairo 11441, Egypt
| | - Sameh AbouElenin
- Department of Gastroenterology and Hepatology, Military Medical Academy, Cairo 11441, Egypt
| | - Ramy El-Husseiny
- Department of Hepatology and Tropical Medicine, National Hepatology and Tropical Medicine Research Institute (NHTMRI), Cairo 11441, Egypt
| | - Ahmed Alzamzamy
- Department of Gastroenterology and Hepatology, Maadi Armed Forces Medical Complex, Military Medical Academy, Cairo 11441, Egypt
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Visani M, Acquaviva G, De Leo A, Sanza V, Merlo L, Maloberti T, Brandes AA, Franceschi E, Di Battista M, Masetti M, Jovine E, Fiorino S, Pession A, Tallini G, de Biase D. Molecular alterations in pancreatic tumors. World J Gastroenterol 2021; 27:2710-2726. [PMID: 34135550 PMCID: PMC8173386 DOI: 10.3748/wjg.v27.i21.2710] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/25/2021] [Accepted: 04/14/2021] [Indexed: 02/06/2023] Open
Abstract
Genetic alterations in pancreatic tumors can usually be classified in: (1) Mutational activation of oncogenes; (2) Inactivation of tumor suppressor genes; and (3) Inactivation of genome maintenance genes controlling the repair of DNA damage. Endoscopic ultrasound-guided fine-needle aspiration has improved pre-operative diagnosis, but the management of patients with a pancreatic lesion is still challenging. Molecular testing could help mainly in solving these “inconclusive” specimens. The introduction of multi-gene analysis approaches, such as next-generation sequencing, has provided a lot of useful information on the molecular characterization of pancreatic tumors. Different types of pancreatic tumors (e.g., pancreatic ductal adenocarcinomas, intraductal papillary mucinous neoplasms, solid pseudopapillary tumors) are characterized by specific molecular alterations. The aim of this review is to summarize the main molecular alterations found in pancreatic tumors.
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Affiliation(s)
- Michela Visani
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna–Molecular Diagnostic Unit, Azienda USL di Bologna, Bologna 40138, Italy
| | - Giorgia Acquaviva
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna–Molecular Diagnostic Unit, Azienda USL di Bologna, Bologna 40138, Italy
| | - Antonio De Leo
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna–Molecular Diagnostic Unit, Azienda USL di Bologna, Bologna 40138, Italy
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna 40138, Italy
| | - Viviana Sanza
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna–Molecular Diagnostic Unit, Azienda USL di Bologna, Bologna 40138, Italy
| | - Lidia Merlo
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna–Molecular Diagnostic Unit, Azienda USL di Bologna, Bologna 40138, Italy
| | - Thais Maloberti
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna–Molecular Diagnostic Unit, Azienda USL di Bologna, Bologna 40138, Italy
| | - Alba A Brandes
- Medical Oncology Department, Azienda USL/IRCCS Istituto Delle Scienze Neurologiche di Bologna, Bologna 40139, Italy
| | - Enrico Franceschi
- Medical Oncology Department, Azienda USL/IRCCS Istituto Delle Scienze Neurologiche di Bologna, Bologna 40139, Italy
| | - Monica Di Battista
- Medical Oncology Department, Azienda USL/IRCCS Istituto Delle Scienze Neurologiche di Bologna, Bologna 40139, Italy
| | - Michele Masetti
- Division of Surgery, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna 40133, Italy
| | - Elio Jovine
- Division of Surgery, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna 40133, Italy
| | - Sirio Fiorino
- Internal Medicine Unit, Budrio Hospital Azienda USL, Bologna 40133, Italy
| | - Annalisa Pession
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna 40138, Italy
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna 40138, Italy
| | - Giovanni Tallini
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna–Molecular Diagnostic Unit, Azienda USL di Bologna, Bologna 40138, Italy
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna 40138, Italy
| | - Dario de Biase
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna 40138, Italy
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna 40138, Italy
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Simpson RE, Flick KF, Gromski MA, Al-Haddad MA, Easler JJ, Sherman S, Fogel EL, Schmidt CM, DeWitt JM. Utility of DNA Profiling From Main Pancreatic Duct Fluid by Endoscopic Ultrasound and Endoscopic Retrograde Cholangiopancreatography to Screen for Malignant Potential. Pancreas 2021; 49:714-722. [PMID: 32433411 DOI: 10.1097/mpa.0000000000001549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES The yield of genetic testing of main pancreatic duct (MPD) fluid collected during endoscopic retrograde cholangiopancreatography (ERCP) versus endoscopic ultrasound-guided fine-needle aspiration is unclear. METHODS Consecutive MPD fluid samples obtained by endoscopic ultrasound/ERCP with DNA profiling were reviewed, excluding specimens designated "no amplification." Invasive disease included invasive cancer or malignant cytology. RESULTS One hundred ten samples from 109 patients who underwent ERCP (n = 32) or endoscopic ultrasound-guided fine-needle aspiration (n = 78) were analyzed (2007-2018). Leading indications were dilated MPD and suspected intraductal papillary mucinous neoplasm. Elevated DNA quantity, KRAS, loss of heterozygosity (LOH), and GNAS mutations occurred in 61.5%, 25.5%, 16.4%, and 8.7% of samples, respectively. Elevated DNA quantity occurred more frequently in ERCP samples (84.4% vs 51.9%, P = 0.002); other mutation yields were similar (P > 0.05). Invasive pathology (P = 0.032) was associated with LOH in the subset of patients who underwent surgery (n = 44). Adverse events occurred more frequently after ERCP (28.1% vs 9.0%, P = 0.016). CONCLUSIONS Endoscopic MPD fluid sampling may yield genetic data to improve diagnosis and risk stratification. In our surgical cohort, LOH was the sole predictor of invasive pathology. Endoscopic ultrasound-guided fine-needle aspiration of MPD fluid, when possible, is preferred because of superior safety profile.
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Affiliation(s)
| | | | - Mark A Gromski
- Medicine, Division of Gastroenterology, Indiana University School of Medicine
| | - Mohammad A Al-Haddad
- Medicine, Division of Gastroenterology, Indiana University School of Medicine
- Indiana University Health Pancreatic Cyst and Cancer Early Detection Center
| | - Jeffrey J Easler
- Medicine, Division of Gastroenterology, Indiana University School of Medicine
| | - Stuart Sherman
- Medicine, Division of Gastroenterology, Indiana University School of Medicine
| | - Evan L Fogel
- Medicine, Division of Gastroenterology, Indiana University School of Medicine
| | - C Max Schmidt
- From the Departments of Surgery
- Indiana University Health Pancreatic Cyst and Cancer Early Detection Center
- Department of Biochemistry/Molecular Biology, Indiana University School of Medicine, Indianapolis, IN
| | - John M DeWitt
- Medicine, Division of Gastroenterology, Indiana University School of Medicine
- Indiana University Health Pancreatic Cyst and Cancer Early Detection Center
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McCarty TR, Paleti S, Rustagi T. Molecular analysis of EUS-acquired pancreatic cyst fluid for KRAS and GNAS mutations for diagnosis of intraductal papillary mucinous neoplasia and mucinous cystic lesions: a systematic review and meta-analysis. Gastrointest Endosc 2021; 93:1019-1033.e5. [PMID: 33359054 DOI: 10.1016/j.gie.2020.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 12/09/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Although molecular analysis of pancreatic cyst fluid may aid pancreatic cyst classification, clinical practice remains highly variable. Therefore, we performed a systematic review and meta-analysis to evaluate the diagnostic performance of KRAS and GNAS mutations in EUS-acquired pancreatic cyst fluid for diagnosis of intraductal papillary mucinous neoplasms (IPMNs) and mucinous cystic lesions (MCLs). METHODS Individualized searches were developed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and Meta-Analysis of Observational Studies in Epidemiology (MOOSE) guidelines and meta-analysis analyzed according to the Cochrane Diagnostic Test Accuracy working group methodology. A bivariate model was used to compute the pooled sensitivity and specificity and to plot the summary receiver operating characteristics curve with summary point and corresponding 95% confidence interval (95% CI). RESULTS Six studies (785 lesions) were included. For IPMNs and MCLs, KRAS + GNAS (combination) had significantly higher diagnostic accuracy than KRAS alone and GNAS alone (all P < .001). The pooled sensitivity, specificity, and diagnostic accuracy of KRAS + GNAS mutations for diagnosis of IPMNs were 94% (95% CI, 72-99; I2 = 86.74%), 91% (95% CI, 72-98; I2 = 89.83), and 97% (95% CI, 95-98), respectively, with each significantly higher compared with carcinoembryonic antigen (CEA) alone (all P < .001). For diagnosis of MCLs, KRAS + GNAS had a similar sensitivity and specificity compared with CEA alone; however, diagnostic accuracy was significantly improved (97% [95% CI, 95-98] vs 89% [95% CI, 86-91]; P < .001). CONCLUSIONS Molecular analysis for KRAS + GNAS mutations in EUS-acquired pancreatic cyst fluid has high sensitivity and specificity with significantly improved diagnostic accuracy for diagnosis of IPMNs and MCLs when compared with CEA alone.
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Affiliation(s)
- Thomas R McCarty
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Swathi Paleti
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Tarun Rustagi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
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Keane MG, Afghani E. A Review of the Diagnosis and Management of Premalignant Pancreatic Cystic Lesions. J Clin Med 2021; 10:1284. [PMID: 33808853 PMCID: PMC8003622 DOI: 10.3390/jcm10061284] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/04/2021] [Accepted: 03/09/2021] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cystic lesions are an increasingly common clinical finding. They represent a heterogeneous group of lesions that include two of the three known precursors of pancreatic cancer, intraductal papillary mucinous neoplasms (IPMN) and mucinous cystic neoplasms (MCN). Given that approximately 8% of pancreatic cancers arise from these lesions, careful surveillance and timely surgery offers an opportunity for early curative resection in a disease with a dismal prognosis. This review summarizes the current evidence and guidelines for the diagnosis and management of IPMN/MCN. Current pre-operative diagnostic tests in pancreatic cysts are imperfect and a proportion of patients continue to undergo unnecessary surgical resection annually. Balancing cancer prevention while preventing surgical overtreatment, continues to be challenging when managing pancreatic cysts. Cyst fluid molecular markers, such as KRAS, GNAS, VHL, PIK3CA, SMAD4 and TP53, as well as emerging endoscopic technologies such as needle-based confocal laser endomicroscopy and through the needle microbiopsy forceps demonstrate improved diagnostic accuracy. Differences in management and areas of uncertainty between the guidelines are also discussed, including indications for surgery, surveillance protocols and if and when surveillance can be discontinued.
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Affiliation(s)
| | - Elham Afghani
- Department of Medicine, Johns Hopkins University, Baltimore, MD 21287, USA;
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36
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Geisler D, Khader SN. Educational Case: Pancreatic Cystic Disease: A Multimodal Diagnostic Approach to Determine Clinical Management. Acad Pathol 2021; 8:2374289521998031. [PMID: 35155743 PMCID: PMC8819742 DOI: 10.1177/2374289521998031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/30/2020] [Accepted: 01/14/2021] [Indexed: 11/17/2022] Open
Abstract
The following fictional case is intended as a learning tool within the Pathology Competencies for Medical Education (PCME), a set of national standards for teaching pathology. These are divided into three basic competencies: Disease Mechanisms and Processes, Organ System Pathology, and Diagnostic Medicine and Therapeutic Pathology. For additional information, and a full list of learning objectives for all three competencies, see http://journals.sagepub.com/doi/10.1177/2374289517715040 . 1
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Affiliation(s)
- Daniel Geisler
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Samer N. Khader
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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37
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Kenner B, Chari ST, Kelsen D, Klimstra DS, Pandol SJ, Rosenthal M, Rustgi AK, Taylor JA, Yala A, Abul-Husn N, Andersen DK, Bernstein D, Brunak S, Canto MI, Eldar YC, Fishman EK, Fleshman J, Go VLW, Holt JM, Field B, Goldberg A, Hoos W, Iacobuzio-Donahue C, Li D, Lidgard G, Maitra A, Matrisian LM, Poblete S, Rothschild L, Sander C, Schwartz LH, Shalit U, Srivastava S, Wolpin B. Artificial Intelligence and Early Detection of Pancreatic Cancer: 2020 Summative Review. Pancreas 2021; 50:251-279. [PMID: 33835956 PMCID: PMC8041569 DOI: 10.1097/mpa.0000000000001762] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
ABSTRACT Despite considerable research efforts, pancreatic cancer is associated with a dire prognosis and a 5-year survival rate of only 10%. Early symptoms of the disease are mostly nonspecific. The premise of improved survival through early detection is that more individuals will benefit from potentially curative treatment. Artificial intelligence (AI) methodology has emerged as a successful tool for risk stratification and identification in general health care. In response to the maturity of AI, Kenner Family Research Fund conducted the 2020 AI and Early Detection of Pancreatic Cancer Virtual Summit (www.pdac-virtualsummit.org) in conjunction with the American Pancreatic Association, with a focus on the potential of AI to advance early detection efforts in this disease. This comprehensive presummit article was prepared based on information provided by each of the interdisciplinary participants on one of the 5 following topics: Progress, Problems, and Prospects for Early Detection; AI and Machine Learning; AI and Pancreatic Cancer-Current Efforts; Collaborative Opportunities; and Moving Forward-Reflections from Government, Industry, and Advocacy. The outcome from the robust Summit conversations, to be presented in a future white paper, indicate that significant progress must be the result of strategic collaboration among investigators and institutions from multidisciplinary backgrounds, supported by committed funders.
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Affiliation(s)
| | - Suresh T. Chari
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX
| | | | - David S. Klimstra
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Stephen J. Pandol
- Basic and Translational Pancreas Research Program, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
| | | | - Anil K. Rustgi
- Division of Digestive and Liver Diseases, Department of Medicine, NewYork-Presbyterian/Columbia University Irving Medical Center, New York, NY
| | | | - Adam Yala
- Department of Electrical Engineering and Computer Science
- Jameel Clinic, Massachusetts Institute of Technology, Cambridge, MA
| | - Noura Abul-Husn
- Division of Genomic Medicine, Department of Medicine, Icahn School of Medicine, Mount Sinai, New York, NY
| | - Dana K. Andersen
- Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD
| | | | - Søren Brunak
- Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Marcia Irene Canto
- Division of Gastroenterology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Yonina C. Eldar
- Department of Math and Computer Science, Weizmann Institute of Science, Rehovot, Israel
| | - Elliot K. Fishman
- Department of Radiology and Radiological Science, Johns Hopkins Medicine, Baltimore, MD
| | | | - Vay Liang W. Go
- UCLA Center for Excellence in Pancreatic Diseases, University of California, Los Angeles, Los Angeles, CA
| | | | - Bruce Field
- From the Kenner Family Research Fund, New York, NY
| | - Ann Goldberg
- From the Kenner Family Research Fund, New York, NY
| | | | - Christine Iacobuzio-Donahue
- David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Debiao Li
- Biomedical Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | | | - Anirban Maitra
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | | | | | | | | | - Lawrence H. Schwartz
- Department of Radiology, NewYork-Presbyterian Hospital/Columbia University Irving Medical Center, New York, NY
| | - Uri Shalit
- Faculty of Industrial Engineering and Management, Technion—Israel Institute of Technology, Haifa, Israel
| | - Sudhir Srivastava
- Division of Cancer Prevention, National Cancer Institute, Bethesda, MD
| | - Brian Wolpin
- Gastrointestinal Cancer Center, Dana-Farber Cancer Institute, Boston, MA
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Kane LE, Mellotte GS, Conlon KC, Ryan BM, Maher SG. Multi-Omic Biomarkers as Potential Tools for the Characterisation of Pancreatic Cystic Lesions and Cancer: Innovative Patient Data Integration. Cancers (Basel) 2021; 13:769. [PMID: 33673153 PMCID: PMC7918773 DOI: 10.3390/cancers13040769] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 01/27/2021] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancer (PC) is regarded as one of the most lethal malignant diseases in the world, with GLOBOCAN 2020 estimates indicating that PC was responsible for almost half a million deaths worldwide in 2020. Pancreatic cystic lesions (PCLs) are fluid-filled structures found within or on the surface of the pancreas, which can either be pre-malignant or have no malignant potential. While some PCLs are found in symptomatic patients, nowadays many PCLs are found incidentally in patients undergoing cross-sectional imaging for other reasons-so called 'incidentalomas'. Current methods of characterising PCLs are imperfect and vary hugely between institutions and countries. As such, there is a profound need for improved diagnostic algorithms. This could facilitate more accurate risk stratification of those PCLs that have malignant potential and reduce unnecessary surveillance. As PC continues to have such a poor prognosis, earlier recognition and risk stratification of PCLs may lead to better treatment protocols. This review will focus on the importance of biomarkers in the context of PCLs and PCand outline how current 'omics'-related work could contribute to the identification of a novel integrated biomarker profile for the risk stratification of patients with PCLs and PC.
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Affiliation(s)
- Laura E. Kane
- Department of Surgery, Trinity St. James’s Cancer Institute, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin D08 W9RT, Ireland;
| | - Gregory S. Mellotte
- Department of Gastroenterology, Tallaght University Hospital, Dublin D24 NR0A, Ireland; (G.S.M.); (B.M.R.)
| | - Kevin C. Conlon
- Discipline of Surgery, School of Medicine, Trinity College Dublin, Dublin D02 PN40, Ireland;
| | - Barbara M. Ryan
- Department of Gastroenterology, Tallaght University Hospital, Dublin D24 NR0A, Ireland; (G.S.M.); (B.M.R.)
| | - Stephen G. Maher
- Department of Surgery, Trinity St. James’s Cancer Institute, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin D08 W9RT, Ireland;
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39
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Practical Applications of Molecular Testing in the Cytologic Diagnosis of Pancreatic Cysts. JOURNAL OF MOLECULAR PATHOLOGY 2021. [DOI: 10.3390/jmp2010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Mucinous pancreatic cysts are precursor lesions of ductal adenocarcinoma. Discoveries of the molecular alterations detectable in pancreatic cyst fluid (PCF) that help to define a mucinous cyst and its risk for malignancy have led to more routine molecular testing in the preoperative evaluation of these cysts. The differential diagnosis of pancreatic cysts is broad and ranges from non-neoplastic to premalignant to malignant cysts. Not all pancreatic cysts—including mucinous cysts—require surgical intervention, and it is the preoperative evaluation with imaging and PCF analysis that determines patient management. PCF analysis includes biochemical and molecular analysis, both of which are ancillary studies that add significant value to the final cytological diagnosis. While testing PCF for carcinoembryonic antigen (CEA) is a very specific test for a mucinous etiology, many mucinous cysts do not have an elevated CEA. In these cases, detection of a KRAS and/or GNAS mutation is highly specific for a mucinous etiology, with GNAS mutations supporting an intraductal papillary mucinous neoplasm. Late mutations in the progression to malignancy such as those found in TP53, p16/CDKN2A, and/or SMAD4 support a high-risk lesion. This review highlights PCF triage and analysis of pancreatic cysts for optimal cytological diagnosis.
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40
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Abstract
Pancreatic cystic neoplasms (PCNs) are being detected increasingly frequently due to the widespread use of high-resolution abdominal imaging modalities. Some subtypes of PCNs have the potential for malignant transformation. Therefore, accurate diagnosis of PCNs is crucial to determine whether surgical resection or surveillance is the best management strategy. However, the current cross-section imaging modalities are not accurate enough to enable definite diagnoses. In the last decade, EUS-based techniques have emerged, aiming to overcome the limitations of standard cross-section imaging modalities. These novel EUS-based techniques were primarily designed to acquire distinct images to make radiological diagnoses, collect cyst fluid to undergo biochemical or molecular analyses, and obtain tissue to conclude the pathological diagnoses. In this article, we present a comprehensive and critical review of these emerging EUS techniques for the diagnosis of PCNs, with emphasis being placed on the advantages, feasibilities, diagnostic performances, and limitations of these novel techniques.
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Affiliation(s)
- Liqi Sun
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Haojie Huang
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zhendong Jin
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, China
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41
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Luthra AK, Pusateri AJ, Pfeil SA, Groce JR, Hussan H, Stanich PP, Strobel S, Patel A, Behzadi J, Chan MQ, Ramsey ML, Ugbarugba E, Allen KD, Patel S, Farah F, Patel A, Vedachalam S, Blaszczak AM, Lee D, Porter K, Krishna SG. Confocal Laser Endomicroscopy Interpretation and Differentiation of Pancreatic Cysts: A Randomized Trial of Teaching Modalities. TECHNIQUES AND INNOVATIONS IN GASTROINTESTINAL ENDOSCOPY 2021; 23:8-17. [DOI: 10.1016/j.tige.2020.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2023]
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42
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Shyu S, Singhi AD. Cystic biliary tumors of the liver: diagnostic criteria and common pitfalls. Hum Pathol 2020; 112:70-83. [PMID: 33383041 DOI: 10.1016/j.humpath.2020.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/19/2020] [Accepted: 12/21/2020] [Indexed: 02/08/2023]
Abstract
With major advancements and frequent use of abdominal imaging techniques, hepatic cysts are increasingly encountered in clinical practice. Although the majority of cysts are benign, a small subset represents neoplastic precursors to cholangiocarcinoma. These cystic precursors include intraductal papillary neoplasms of the bile duct (IPNB) and mucinous cystic neoplasms of the liver (MCN-L), and bear striking pathologic resemblance to corresponding cystic neoplastic precursors within the pancreas. This review examines the salient clinical, gross, microscopic and molecular features of IPNBs and MCN-Ls, and, in particular, provides histopathologic comparison to their pancreatic counterparts. Considering these neoplasms may be diagnostically challenging, we also discuss other hepatic lesions within the differential diagnosis, and the potential for molecular methods to improve their preoperative evaluation and the early detection of cholangiocarcinoma.
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Affiliation(s)
- Susan Shyu
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Aatur D Singhi
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
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Non-coding RNA biomarkers in pancreatic ductal adenocarcinoma. Semin Cancer Biol 2020; 75:153-168. [PMID: 33049362 DOI: 10.1016/j.semcancer.2020.10.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/20/2020] [Accepted: 10/02/2020] [Indexed: 12/13/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal malignancies, which is usually diagnosed at an advanced stage. The late disease diagnosis, the limited availability of effective therapeutic interventions and lack of robust diagnostic biomarkers, are some of the primary reasons for the dismal 5-year survival rates (∼8%) in patients with PDAC. The pancreatic cancer develops through accumulation of a series of genomic and epigenomic alterations which lead to the transformation of normal pancreatic epithelium into an invasive carcinoma - a process that can take up to 15-20 years to develop, from the occurrence of first initiating mutational event. These facts highlight a unique window of opportunity for the earlier detection of PDAC, which could allow timely disease interception and improvement in the overall survival outcomes in patients suffering from this fatal malignancy. Non-coding RNAs (ncRNAs) have been recognized to play a central role in PDAC pathogenesis and are emerging as attractive candidates for biomarker development in various cancers, including PDAC. More specifically, the ncRNAs play a pivotal role in PDAC biology as they affect tumor growth, migration, and invasion by regulating cellular processes including cell cycle, apoptosis, and epithelial-mesenchymal transition. In this review, we focus on three types of well-established ncRNAs - microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs) - and discuss their potential as diagnostic, prognostic and predictive biomarkers in PDAC.
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McCarty T, Rustagi T. Endoscopic ultrasound-guided through-the-needle microforceps biopsy improves diagnostic yield for pancreatic cystic lesions: a systematic review and meta-analysis. Endosc Int Open 2020; 8:E1280-E1290. [PMID: 33015329 PMCID: PMC7508652 DOI: 10.1055/a-1194-4085] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 04/09/2020] [Indexed: 02/08/2023] Open
Abstract
Background and study aims Given variable diagnostic yield of endoscopic ultrasound (EUS)-guided fine-needle aspiration (FNA) for pancreatic cystic lesions (PCLs), a through-the-needle (TTN) microforceps biopsy device passed through a 19-gauge FNA needle has been devised to improve tissue sampling. This was a systematic review and meta-analysis to evaluate the feasibility, diagnostic yield, and safety of EUS-guided TTN microforceps biopsy for diagnosis of PCLs. Methods Individualized searches were developed in accordance with PRISMA and MOOSE guidelines. This was a cumulative meta-analysis performed by calculating pooled proportions with rates estimated using random effects models. Measured outcomes included pooled technical success, diagnostic yield, accuracy, and procedure-associated adverse events (AEs) as well as comparison to conventional FNA. Results Eleven studies (n = 518 patients; mean age 64.13 ± 5.83 years; 58.19 % female) were included. Mean PCL size was 33.39 ± 3.72 mm with the pancreatic head/uncinate (35.50 %) being the most common location. A mean of 2.47 ± 0.92 forceps passes were performed with a mean of 2.79 ± 0.81 microbiopsies obtained per lesion. Pooled technical success was 97.12 % (95 % CI, 93.73-98.71; I 2 = 34.49) with a diagnostic yield of 79.60 % (95 % CI, 72.62-85.16; I 2 = 56.00), and accuracy of 82.76 % [(95 % CI, 77.80-86.80; I 2 = 0.00). The pooled serious adverse event rate was 1.08 % (95 % CI, 0.43-2.69; I 2 = 0.00). Compared to conventional FNA, TTN microforceps biopsy resulted in significant improvement in diagnostic yield [OR 4.79 (95 % CI: 1.52-15.06; P = 0.007)] and diagnostic accuracy [OR 8.69 (95 % CI, 1.12-67.12; P = 0.038)], respectively. Conclusions EUS-guided TTN microforceps biopsy appears to be safe and effective for diagnosis of PCLs with improvement in diagnostic yield and accuracy when compared to FNA alone.
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Affiliation(s)
- Thomas McCarty
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Tarun Rustagi
- Division of Gastroenterology and Hepatology, University of New Mexico, Albuquerque, New Mexico, United States
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Faias S, Duarte M, Pereira L, Chaves P, Cravo M, Dias Pereira A, Albuquerque C. Methylation changes at the GNAS imprinted locus in pancreatic cystic neoplasms are important for the diagnosis of malignant cysts. World J Gastrointest Oncol 2020; 12:1056-1064. [PMID: 33005298 PMCID: PMC7510000 DOI: 10.4251/wjgo.v12.i9.1056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/18/2020] [Accepted: 08/01/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Guanine nucleotide-binding protein, alpha stimulating (GNAS) mutations are characteristic of intraductal papillary mucinous neoplasms (IPMNs). Pancreatic ductal adenocarcinomas (PDACs) harboring GNAS mutations originate in IPMNs. GNAS is a complex imprinted locus that produces five transcripts regulated by differential methylated regions, NESP55, GNASAS, GNASXL, GNAS1A, and GNAS.
AIM To evaluate if methylation changes in the differential methylated regions of GNAS locus contributed to malignant progression of pancreatic cysts.
METHODS GNAS locus methylation was analyzed in archival pancreatic cyst fluid (PCF) obtained by endoscopic ultrasound with fine-needle aspiration by methylation specific–multiplex ligation dependent probe amplification. Results were normalized and analyzed using Coffalyser.Net software.
RESULTS Fifty-two PCF samples obtained by endoscopic ultrasound with fine-needle aspiration and previously characterized for KRAS and GNAS mutations were studied. The final diagnoses were surgical (11) and clinicopathological (41), including 30 benign cysts, 14 pre-malignant cyst, and eight malignant cysts. Methylation changes at NESP55, GNASAS, GNAS1A, and especially GNASXL were more frequent in malignant cysts, and NESP55 and GNASAS were useful for diagnosis. A combined variable defined as “GNAS locus methylation changes” was significantly associated with malignancy (6/8 malignant cysts and only 2/20 benign cysts) and improved classification. Hypermethylation in both maternally (NESP55) and paternally (GNASXL) derived promoters was found in 3/3 PDACs.
CONCLUSION This is the first study to identify methylation changes in the GNAS locus, improving the diagnosis of malignant pancreatic cysts and suggesting a role in progression to PDAC.
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Affiliation(s)
- Sandra Faias
- Department of Gastroenterology, Instituto Português de Oncologia de Lisboa Francisco Gentil, EPE, Lisboa 1099-023, Portugal
- Faculty of Health Sciences, University of Beira Interior, Covilhã 6200-506, Portugal
| | - Marlene Duarte
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil, EPE, Lisboa 1099-023, Portugal
| | - Luísa Pereira
- Centro de Matemática e Aplicações (CMA-UBI), Universidade da Beira Interior, Covilhã 6200-506, Portugal
| | - Paula Chaves
- Faculty of Health Sciences, University of Beira Interior, Covilhã 6200-506, Portugal
- Department of Pathology, Instituto Português de Oncologia de Lisboa Francisco Gentil, EPE, Lisboa 1099-023, Portugal
| | - Marília Cravo
- Department of Gastroenterology, Hospital Beatriz Ângelo, Loures 2674-514, Portugal
| | - Antonio Dias Pereira
- Department of Gastroenterology, Instituto Português de Oncologia de Lisboa Francisco Gentil, EPE, Lisboa 1099-023, Portugal
| | - Cristina Albuquerque
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil, EPE, Lisboa 1099-023, Portugal
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Marker Identification of the Grade of Dysplasia of Intraductal Papillary Mucinous Neoplasm in Pancreatic Cyst Fluid by Quantitative Proteomic Profiling. Cancers (Basel) 2020; 12:cancers12092383. [PMID: 32842508 PMCID: PMC7565268 DOI: 10.3390/cancers12092383] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 08/20/2020] [Indexed: 12/28/2022] Open
Abstract
The incidence of patients with pancreatic cystic lesions, particularly intraductal papillary mucinous neoplasm (IPMN), is increasing. Current guidelines, which primarily consider radiological features and laboratory data, have had limited success in predicting malignant IPMN. The lack of a definitive diagnostic method has led to low-risk IPMN patients undergoing unnecessary surgeries. To address this issue, we discovered IPMN marker candidates by analyzing pancreatic cystic fluid by mass spectrometry. A total of 30 cyst fluid samples, comprising IPMN dysplasia and other cystic lesions, were evaluated. Mucus was removed by brief sonication, and the resulting supernatant was subjected to filter-aided sample preparation and high-pH peptide fractionation. Subsequently, the samples were analyzed by LC-MS/MS. Using several bioinformatics tools, such as gene ontology and ingenuity pathway analysis, we detailed IPMNs at the molecular level. Among the 5834 proteins identified in our dataset, 364 proteins were differentially expressed between IPMN dysplasia. The 19 final candidates consistently increased or decreased with greater IPMN malignancy. CD55 was validated in an independent cohort by ELISA, Western blot, and IHC, and the results were consistent with the MS data. In summary, we have determined the characteristics of pancreatic cyst fluid proteins and discovered potential biomarkers for IPMN dysplasia.
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The Diagnostic Accuracy of Mutant KRAS Detection from Pancreatic Secretions for the Diagnosis of Pancreatic Cancer: A Meta-Analysis. Cancers (Basel) 2020; 12:cancers12092353. [PMID: 32825312 PMCID: PMC7564395 DOI: 10.3390/cancers12092353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 12/18/2022] Open
Abstract
This meta-analysis aims to identify the diagnostic accuracy of mutations in the Kirsten Rat Sarcoma (KRAS) oncogene in the diagnosis of pancreatic ductal adenocarcinoma (PDAC). The survival of PDAC remains poor often due to the fact that disease is advanced at diagnosis. We analysed 22 studies, with a total of 2156 patients, to identify if the detection of KRAS mutations from pancreatic exocrine secretions yields sufficient specificity and sensitivity to detect patients with PDAC amongst healthy individuals. The majority of the studies were retrospective, samples were obtained endoscopically or surgically, and included comparator populations of patients with chronic pancreatitis and pre-malignant pancreatic lesions (PanIN) as well as healthy controls. We performed several analyses to identify the diagnostic accuracy for PDAC among these patient populations. Our results highlighted that the diagnostic accuracy of KRAS mutation for PDAC was of variable sensitivity and specificity when compared with PanINs and chronic pancreatitis, but had a higher specificity among healthy individuals. The sensitivity of this test must be improved to prevent missing early PDAC or PanINs. This could be achieved with rigorous prospective cohort studies, in which high-risk patients with normal cross-sectional imaging undergo surveillance following KRAS mutation testing.
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Paziewska A, Polkowski M, Goryca K, Karczmarski J, Wiechowska-Kozlowska A, Dabrowska M, Mikula M, Ostrowski J. Mutational Mosaics of Cell-Free DNA from Pancreatic Cyst Fluids. Dig Dis Sci 2020; 65:2294-2301. [PMID: 31925676 DOI: 10.1007/s10620-019-06043-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 12/31/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND Pancreatic cyst fluids (PCFs) enriched in tumor-derived DNA are a potential source of new biomarkers. The study aimed to analyze germinal variants and mutational profiles of cell-free (cf)DNA shed into the cavity of pancreatic cysts. METHODS The study cohort consisted of 71 patients who underwent endoscopic ultrasound fine-needle aspiration of PCF. Five malignant cysts, 19 intraductal papillary mucinous neoplasms (IPMNs), 11 mucinous cystic neoplasms (MCNs), eight serous cystic neoplasms (SCNs), and 28 pseudocysts were identified. The sequencing of 409 genes included in Comprehensive Cancer Panel was performed using Ion Proton System. The mutation rate of the KRAS and GNAS canonical loci was additionally determined using digital PCR. RESULTS The number of mutations detected with NGS varied from 0 to 22 per gene, and genes with the most mutations were: TP53, KRAS, PIK3CA, GNAS, ADGRA2, and APC. The frequencies of the majority of mutations did not differ between non-malignant cystic neoplasms and pseudocysts. NGS detected KRAS mutations in malignant cysts (60%), IPMNs (32%), MCNs (64%), SCNs (13%), and pseudocysts (14%), with GNAS mutations in 20%, 26%, 27%, 13%, and 21% of samples, respectively. Digital PCR-based testing increased KRAS (68%) and GNAS (52%) mutations detection level in IPMNs, but not other cyst types. CONCLUSIONS We demonstrate relatively high rates of somatic mutations of cancer-related genes, including KRAS and GNAS, in cfDNA isolated from PCFs irrespectively of the pancreatic cyst type. Further studies on molecular mechanisms of pancreatic cysts malignant transformation in relation to their mutational profiles are required.
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Affiliation(s)
- Agnieszka Paziewska
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Roentgena 5, 02-781, Warsaw, Poland.,Department of Genetics, Maria Sklodowska-Curie Institute-Cancer Center, Roentgena 5, 02-781, Warsaw, Poland
| | - Marcin Polkowski
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Roentgena 5, 02-781, Warsaw, Poland
| | - Krzysztof Goryca
- Department of Genetics, Maria Sklodowska-Curie Institute-Cancer Center, Roentgena 5, 02-781, Warsaw, Poland.,Next Generation Sequencing Core Facility, Centre of New Technologies, University of Warsaw, 02-097, Warsaw, Poland
| | - Jakub Karczmarski
- Department of Genetics, Maria Sklodowska-Curie Institute-Cancer Center, Roentgena 5, 02-781, Warsaw, Poland
| | | | - Michalina Dabrowska
- Department of Genetics, Maria Sklodowska-Curie Institute-Cancer Center, Roentgena 5, 02-781, Warsaw, Poland
| | - Michal Mikula
- Department of Genetics, Maria Sklodowska-Curie Institute-Cancer Center, Roentgena 5, 02-781, Warsaw, Poland
| | - Jerzy Ostrowski
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Roentgena 5, 02-781, Warsaw, Poland. .,Department of Genetics, Maria Sklodowska-Curie Institute-Cancer Center, Roentgena 5, 02-781, Warsaw, Poland.
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Molecular Diagnosis of Cystic Neoplasms of the Pancreas: a Review. J Gastrointest Surg 2020; 24:1201-1214. [PMID: 32128679 DOI: 10.1007/s11605-020-04537-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 01/29/2020] [Indexed: 01/31/2023]
Abstract
BACKGROUND The prevalence of incidental pancreatic cystic neoplasms (PCNs) has increased dramatically with advancements in cross-sectional imaging. Diagnostic imaging is limited in differentiating between benign and malignant PCNs. The aim of this review is to provide an overview of biomarkers that can be used to distinguish PCNs. METHODS A review of the literature on molecular diagnosis of cystic neoplasms of the pancreas was performed. RESULTS Pancreatic cysts can be categorized into inflammatory and non-inflammatory lesions. Inflammatory cysts include pancreatic pseudocysts. Noninflammatory lesions include both mucinous and non-mucinous lesions. Mucinous lesions include intraductal papillary mucinous neoplasm (IPMN) and mucinous cystic neoplasm. Non-mucinous lesions include serous cystadenoma and solid-pseudopapillary tumor of the pancreas. Imaging, cyst aspiration, and histologic findings, as well as carcinoembryonic antigen and amylase are commonly used to distinguish between cyst types. However, molecular techniques to detect differences in genetic mutations, protein expression, glycoproteomics, and metabolomic profiling are important developments in distinguishing between cyst types. DISCUSSION Nomograms incorporating common clinical, laboratory, and imaging findings have been developed in a better effort to predict malignant IPMN. The incorporation of top molecular biomarker candidates to nomograms may improve the predictive ability of current models to more accurately diagnose malignant PCNs.
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Management of Incidental Pancreatic Cystic Lesions: Integrating Novel Diagnostic and Prognostic Factors With Current Clinical Guidelines. J Clin Gastroenterol 2020; 54:415-427. [PMID: 32011401 DOI: 10.1097/mcg.0000000000001310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Owing to increased detection rates, the diagnosis and management of incidental pancreatic cysts has become a common predicament. Up to 13% of patients undergoing cross-sectional imaging studies for other indications are found to have pancreatic cystic lesions. Although most cystic lesions are benign, the malignant potential of several types of pancreatic cysts makes accurate classification vital to directing therapy. To this end, advances in the last decade led to better characterization of pancreatic cyst morphology and hence enhanced the ability to predict underlying histopathology, and biological behavior. Although accurate classification remains a challenge, the utilization of complementary diagnostic tools is the optimal approach to dictate management. The following review includes a description of pancreatic cysts, a critical review of current and emerging diagnostic techniques and a review of recent guidelines in the management of incidental pancreatic cysts.
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