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Park JH, Cho ES, Yoon J, Rhee HJ, Park J, Choi JY, Chung YE. MRI radiomics model differentiates small hepatic metastases and abscesses in periampullary cancer patients. Sci Rep 2024; 14:23541. [PMID: 39384874 PMCID: PMC11464643 DOI: 10.1038/s41598-024-74311-w] [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: 01/29/2024] [Accepted: 09/25/2024] [Indexed: 10/11/2024] Open
Abstract
This multi-center, retrospective study focused on periampullary cancer patients undergoing MRI for hepatic metastasis and abscess differentiation. T1-weighted, T2-weighted, and arterial phase images were utilized to create radiomics models. In the training-set, 112 lesions in 54 patients (median age [IQR, interquartile range], 73 [63-80]; 38 men) were analyzed, and 123 lesions in 55 patients (72 [66-78]; 34 men) comprised the validation set. The T1-weighted + T2-weighted radiomics model showed the highest AUC (0.82, 95% CI 0.75-0.89) in the validation set. Notably, < 30% T1-T2 size discrepancy in MRI findings predicted metastasis (Ps ≤ 0.037), albeit with AUCs of 0.64-0.68 for hepatic metastasis. The radiomics model enhanced radiologists' performance (AUCs, 0.85-0.87 vs. 0.80-0.84) and significantly increased diagnostic confidence (P < 0.001). Although the performance increase lacked statistical significance (P = 0.104-0.281), the radiomics model proved valuable in differentiating small hepatic lesions and enhancing diagnostic confidence. This study highlights the potential of MRI-based radiomics in improving accuracy and confidence in the diagnosis of periampullary cancer-related hepatic lesions.
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Affiliation(s)
- Jae Hyon Park
- Department of Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Radiology, Armed Forces Daejeon Hospital, Daejeon, Republic of Korea
| | - Eun-Suk Cho
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jongjin Yoon
- Department of Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyung-Jin Rhee
- Department of Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - June Park
- Department of Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin-Young Choi
- Department of Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yong Eun Chung
- Department of Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Department of Radiology, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea.
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Kim HS, Kang MJ, Kang J, Kim K, Kim B, Kim SH, Kim SJ, Kim YI, Kim JY, Kim JS, Kim H, Kim HJ, Nahm JH, Park WS, Park E, Park JK, Park JM, Song BJ, Shin YC, Ahn KS, Woo SM, Yu JI, Yoo C, Lee K, Lee DH, Lee MA, Lee SE, Lee IJ, Lee H, Im JH, Jang KT, Jang HY, Jun SY, Chon HJ, Jung MK, Chung YE, Chong JU, Cho E, Chie EK, Choi SB, Choi SY, Choi SJ, Choi JY, Choi HJ, Hong SM, Hong JH, Hong TH, Hwang SH, Hwang IG, Park JS. Practice guidelines for managing extrahepatic biliary tract cancers. Ann Hepatobiliary Pancreat Surg 2024; 28:161-202. [PMID: 38679456 PMCID: PMC11128785 DOI: 10.14701/ahbps.23-170] [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: 12/13/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 05/01/2024] Open
Abstract
Backgrounds/Aims Reported incidence of extrahepatic bile duct cancer is higher in Asians than in Western populations. Korea, in particular, is one of the countries with the highest incidence rates of extrahepatic bile duct cancer in the world. Although research and innovative therapeutic modalities for extrahepatic bile duct cancer are emerging, clinical guidelines are currently unavailable in Korea. The Korean Society of Hepato-Biliary-Pancreatic Surgery in collaboration with related societies (Korean Pancreatic and Biliary Surgery Society, Korean Society of Abdominal Radiology, Korean Society of Medical Oncology, Korean Society of Radiation Oncology, Korean Society of Pathologists, and Korean Society of Nuclear Medicine) decided to establish clinical guideline for extrahepatic bile duct cancer in June 2021. Methods Contents of the guidelines were developed through subgroup meetings for each key question and a preliminary draft was finalized through a Clinical Guidelines Committee workshop. Results In November 2021, the finalized draft was presented for public scrutiny during a formal hearing. Conclusions The extrahepatic guideline committee believed that this guideline could be helpful in the treatment of patients.
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Affiliation(s)
- Hyung Sun Kim
- Department of Surgery, Pancreatobiliary Clinic, Yonsei University College of Medicine, Seoul, Korea
| | - Mee Joo Kang
- Center for Liver and Pancreatobiliary Cancer, National Cancer Center, Goyang, Korea
| | - Jingu Kang
- Department of Internal Medicine, Kangdong Sacred Heart Hospital of Hallym University Medical Center, Seoul, Korea
| | - Kyubo Kim
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Bohyun Kim
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, Korea
| | - Seong-Hun Kim
- Department of Internal Medicine, Jeonbuk National University Medical School and Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Soo Jin Kim
- Department of Radiology, National Cancer Center, Goyang, Korea
| | - Yong-Il Kim
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Joo Young Kim
- Department of Pathology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Jin Sil Kim
- Department of Radiology, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Haeryoung Kim
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hyo Jung Kim
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Ji Hae Nahm
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Won Suk Park
- Division of Gastroenterology, Department of Internal Medicine, Daejeon St. Mary’s Hospital College of Medicine, The Catholic University of Korea, Daejeon, Korea
| | - Eunkyu Park
- Division of HBP Surgery, Department of Surgery, Chonnam National University Hospital, Gwangju, Korea
| | - Joo Kyung Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jin Myung Park
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Byeong Jun Song
- Department of Internal Medicine, Myongji Hospital, Goyang, Korea
| | - Yong Chan Shin
- Department of Surgery, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Keun Soo Ahn
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Keimyung University Dongsan Hospital, Daegu, Korea
| | - Sang Myung Woo
- Center for Liver and Pancreatobiliary Cancer, Hospital, Immuno-Oncology Branch Division of Rare and Refractory Center, Research Institute of National Cancer Center, Goyang, Korea
| | - Jeong Il Yu
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Changhoon Yoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyoungbun Lee
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Ho Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Myung Ah Lee
- Division of Medical Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung Eun Lee
- Department of Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Ik Jae Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - Huisong Lee
- Department of Surgery, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Jung Ho Im
- Department of Radiation Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Kee-Taek Jang
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hye Young Jang
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sun-Young Jun
- Department of Pathology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hong Jae Chon
- Department of Medical Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Min Kyu Jung
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Yong Eun Chung
- Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Uk Chong
- Department of Surgery, National Health Insurance Services Ilsan Hospital, Goyang, Korea
| | - Eunae Cho
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Eui Kyu Chie
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea
| | - Sae Byeol Choi
- Department of Surgery, Korea Universtiy Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Seo-Yeon Choi
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seong Ji Choi
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Joon Young Choi
- Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hye-Jeong Choi
- Department of Pathology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Seung-Mo Hong
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ji Hyung Hong
- Division of Medical Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Tae Ho Hong
- Division of Hepato-Biliary and Pancreas Surgery, Department of Surgery, Seoul St. Mary’s Hospital College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Shin Hye Hwang
- Department of Radiology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - In Gyu Hwang
- Division of Hemato-Oncology, Department of Internal Medicine, Chung-Ang University Hospital Chung-Ang University College of Medicine, Seoul, Korea
| | - Joon Seong Park
- Department of Surgery, Pancreatobiliary Clinic, Yonsei University College of Medicine, Seoul, Korea
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Choi MH, Yoon SB, Lee YJ, Jung ES, Pak S, Han D, Nickel D. Rim enhancement of pancreatic ductal adenocarcinoma: investigating the relationship with DCE-MRI-based radiomics and next-generation sequencing. Front Oncol 2024; 14:1304187. [PMID: 38525415 PMCID: PMC10959187 DOI: 10.3389/fonc.2024.1304187] [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: 09/29/2023] [Accepted: 02/16/2024] [Indexed: 03/26/2024] Open
Abstract
PURPOSE To identify the clinical and genetic variables associated with rim enhancement of pancreatic ductal adenocarcinoma (PDAC) and to develop a dynamic contrast-enhanced (DCE) MRI-based radiomics model for predicting the genetic status from next-generation sequencing (NGS). MATERIALS AND METHODS Patients with PDAC, who underwent pretreatment pancreatic DCE-MRI between November 2019 and July 2021, were eligible in this prospective study. Two radiologists evaluated presence of rim enhancement in PDAC, a known radiological prognostic indicator, on DCE MRI. NGS was conducted for the tissue from the lesion. The Mann-Whitney U and Chi-square tests were employed to identify clinical and genetic variables associated with rim enhancement in PDAC. For continuous variables predicting rim enhancement, the cutoff value was set based on the Youden's index from the receiver operating characteristic (ROC) curve. Radiomics features were extracted from a volume-of-interest of PDAC on four DCE maps (Ktrans, Kep, Ve, and iAUC). A random forest (RF) model was constructed using 10 selected radiomics features from a pool of 392 original features. This model aimed to predict the status of significant NGS variables associated with rim enhancement. The performance of the model was validated using test set. RESULTS A total of 55 patients (32 men; median age 71 years) were randomly assigned to the training (n = 41) and test (n = 14) sets. In the training set, KRAS, TP53, CDKN2A, and SMAD4 mutation rates were 92.3%, 61.8%, 14.5%, and 9.1%, respectively. Tumor size and KRAS variant allele frequency (VAF) differed between rim-enhancing (n = 12) and nonrim-enhancing (n = 29) PDACs with a cutoff of 17.22%. The RF model's average AUC from 10-fold cross-validation for predicting KRAS VAF status was 0.698. In the test set comprising 6 tumors with low KRAS VAF and 8 with high KRAS VAF, the RF model's AUC reached 1.000, achieving a sensitivity of 75.0%, specificity of 100% and accuracy of 87.5%. CONCLUSION Rim enhancement of PDAC is associated with KRAS VAF derived from NGS-based genetic information. For predicting the KRAS VAF status in PDAC, a radiomics model based on DCE maps showed promising results.
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Affiliation(s)
- Moon Hyung Choi
- Department of Radiology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung Bae Yoon
- Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Joon Lee
- Department of Radiology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eun Sun Jung
- Department of Hospital Pathology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seongyong Pak
- Research Collaboration, Siemens Healthineers Ltd., Seoul, Republic of Korea
| | - Dongyeob Han
- Research Collaboration, Siemens Healthineers Ltd., Seoul, Republic of Korea
| | - Dominik Nickel
- MR Applications Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany
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Chu LC, Wang ZJ, Kambadakone A, Hecht EM, He J, Narang AK, Laheru DA, Arif-Tiwari H, Bhosale P, Bolan CW, Brook OR, Bezuidenhout AF, Do RKG, Galgano SJ, Goenka AH, Guimaraes AR, Hough DM, Kulkarni N, Le O, Luk L, Mannelli L, Rosenthal M, Sangster G, Shah ZK, Soloff EV, Tolat PP, Zins M, Fishman EK, Tamm EP, Zaheer A. Postoperative surveillance of pancreatic ductal adenocarcinoma (PDAC) recurrence: practice pattern on standardized imaging and reporting from the society of abdominal radiology disease focus panel on PDAC. Abdom Radiol (NY) 2023; 48:318-339. [PMID: 36241752 DOI: 10.1007/s00261-022-03693-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 01/21/2023]
Abstract
PURPOSE Surgical resection is the only potential curative treatment for patients with pancreatic ductal adenocarcinoma (PDAC), but unfortunately most patients recur within 5 years of surgery. This article aims to assess the practice patterns across major academic institutions and develop consensus recommendations for postoperative imaging and interpretation in patients with PDAC. METHODS The consensus recommendations for postoperative imaging surveillance following PDAC resection were developed using the Delphi method. Members of the Society of Abdominal Radiology (SAR) PDAC Disease Focused Panel (DFP) underwent three rounds of surveys followed by live webinar group discussions to develop consensus recommendations. RESULTS Significant variations currently exist in the postoperative surveillance of PDAC, even among academic institutions. Differentiating common postoperative inflammatory and fibrotic changes from tumor recurrence remains a diagnostic challenge, and there is no reliable size threshold or growth rate of imaging findings that can provide differentiation. A new liver lesion or peritoneal nodule should be considered suspicious for tumor recurrence, and the imaging features should be interpreted in the appropriate clinical context (e.g., CA 19-9, clinical presentation, pathologic staging). CONCLUSION Postoperative imaging following PDAC resection is challenging to interpret due to the presence of confounding postoperative inflammatory changes. A standardized reporting template for locoregional findings and report impression may improve communication of relaying risk of recurrence with referring providers, which merits validation in future studies.
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Affiliation(s)
- Linda C Chu
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Zhen J Wang
- Department of Radiology, University of California San Francisco School of Medicine, San Francisco, CA, USA
| | - Avinash Kambadakone
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, USA
| | | | - Jin He
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Amol K Narang
- Department of Radiation Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Daniel A Laheru
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Hina Arif-Tiwari
- Department of Medical Imaging, University of Arizona, Tuscon, AZ, USA
| | - Priya Bhosale
- Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Olga R Brook
- Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | | | - Richard K G Do
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Samuel J Galgano
- Department of Radiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Ajit H Goenka
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Alexander R Guimaraes
- Department of Diagnostic Radiology, Oregon Health & Science University, Portland, OR, USA
| | - David M Hough
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Naveen Kulkarni
- Department of Radiology, Medical College of Wisconsin & Froedtert Health, Milwaukee, WI, USA
| | - Ott Le
- Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lyndon Luk
- Department of Radiology, Columbia University Irving Medical Center, New York, NY, USA
| | - Lorenzo Mannelli
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) SDN, Naples, Italy
| | - Michael Rosenthal
- Department of Imaging, Dana-Farber Cancer Institute, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA, USA
| | - Guillermo Sangster
- Department of Radiology, Ochsner Louisiana State University Health Shreveport, Shreveport, LA, USA
| | - Zarine K Shah
- Department of Radiology, Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Erik V Soloff
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Parag P Tolat
- Department of Radiology, Medical College of Wisconsin & Froedtert Health, Milwaukee, WI, USA
| | - Marc Zins
- Department of Radiology, Hôpital Paris Saint Joseph, Paris, France
| | - Elliot K Fishman
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Eric P Tamm
- Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Atif Zaheer
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Synchronous Pancreatic Ductal Adenocarcinoma in the Head and Tail, a Double Trouble: A Case Report and Literature Review. Diagnostics (Basel) 2022; 12:diagnostics12112709. [PMID: 36359552 PMCID: PMC9689396 DOI: 10.3390/diagnostics12112709] [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: 10/05/2022] [Revised: 10/25/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
Synchronous primary pancreatic ductal adenocarcinoma (PDAC) is very rare and can be formed either through multicentric carcinogenesis or intrapancreatic metastasis. We report the case of an 80-year-old man with a history of type 2 diabetes mellitus who presented with abdominal pain and weight loss. Laboratory tests showed elevated levels of blood glucose and CA 19-9, and Computed Tomography revealed two hypoenhancing lesions in the head and tail of the pancreas. Endoscopic ultrasound, which is the imaging method of choice for pancreatic cancer, was performed with a fine needle biopsy, and the cytological analysis diagnosed PDAC in both lesions. The patient underwent total pancreatectomy, and pathologic evaluation revealed synchronous primary PDAC with moderate to poor differentiation in the head and tail in the setting of IPMN (intraductal papillary mucinous neoplasia) and chronic pancreatitis. After his recovery from postoperative pulmonary embolism, the patient was discharged home with sufficient glycemic control. Multifocal PDAC occurs more often when precursor lesions, such as IPMN, pre-exist. The optimal treatment for multiple lesions spread all over the pancreas is total pancreatectomy. Diabetes mellitus is a serious complication of total pancreatectomy (new-onset or type 3c), but overall, long-term survival has been significantly improved.
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Gatti M, Maino C, Tore D, Carisio A, Darvizeh F, Tricarico E, Inchingolo R, Ippolito D, Faletti R. Benign focal liver lesions: The role of magnetic resonance imaging. World J Hepatol 2022; 14:923-943. [PMID: 35721295 PMCID: PMC9157713 DOI: 10.4254/wjh.v14.i5.923] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/07/2021] [Accepted: 04/09/2022] [Indexed: 02/06/2023] Open
Abstract
Liver lesions are common findings in radiologists' daily routine. They are a complex category of pathology that range from solitary benign lesions to primary liver cancer and liver metastases. Benign focal liver lesions can arise from different liver cell types: Epithelial (hepatocytes and biliary cells) and nonepithelial (mesenchymal cells). Liver magnetic resonance imaging (MRI) is a fundamental radiological method in these patients as it allows with its multiparametric approach optimal non-invasive tissue characterization. Furthermore, advanced liver MRI techniques such as diffusion-weighted imaging and hepatobiliary contrast agents have improved the detection of focal liver lesions and can be highly effective in differentiating pseudotumor from tumors, as well as benign from malignant lesions, and can also be used for differential diagnosis. Although histological examination can be useful in making a definitive diagnosis, MRI is an important modality in the diagnosis of liver lesions with a significant impact on patient care. This aim of this review is to provide a comprehensive overview of benign liver lesions on MRI.
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Affiliation(s)
- Marco Gatti
- Department of Surgical Sciences, University of Turin, Turin 10126, Italy.
| | - Cesare Maino
- Department of Diagnostic Radiology, Ospedale San Gerardo, Monza 20900, Italy
| | - Davide Tore
- Department of Surgical Sciences, University of Turin, Turin 10126, Italy
| | - Andrea Carisio
- Department of Surgical Sciences, University of Turin, Turin 10126, Italy
| | - Fatemeh Darvizeh
- School of Medicine, Vita-Salute San Raffaele University, Milan 20121, Japan
| | | | - Riccardo Inchingolo
- Interventional Radiology Unit, "F. Miulli" Regional General Hospital, Acquaviva delle Fonti 70021, Italy
| | - Davide Ippolito
- Department of Diagnostic Radiology, School of Medicine, University of Milano-Bicocca, Monza 20900, Italy
| | - Riccardo Faletti
- Department of Surgical Sciences, University of Turin, Turin 10126, Italy
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Differentiation of Small Hepatic Abscess From Hepatic Metastasis With a Combination of Imaging Parameters. J Comput Assist Tomogr 2022; 46:514-522. [PMID: 35483061 DOI: 10.1097/rct.0000000000001307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE We aimed to evaluate the diagnostic performance of the combination imaging features to differentiate small (the lesion size of 3 cm or less) hepatic abscess from metastasis. METHODS This retrospective study included patients with preexisting malignancy and small hepatic lesions who underwent contrast-enhanced computed tomography (CT) and gadoxetic acid-enhanced magnetic resonance imaging (MRI) within 4 days between March 2017 and July 2020. Two radiologists independently evaluated the imaging features of each focal hepatic lesion. Laboratory parameters were also recorded. Significant parameters differentiating hepatic abscess from hepatic metastasis were identified by univariate generalized estimating equation regression. We compared the diagnostic performances of laboratory parameters, imaging features, and their combinations. RESULTS We included 16 patients (10 males and 6 females) with 35 hepatic abscesses and 21 patients (13 males and 8 females) with 62 metastases with a mean age of 70.3 years in this study. Abnormal segmental neutrophil, pathy parenchymal enhancement on CT, and absence of dark rim on MRI were associated with hepatic abscess (all P < 0.01). The combination of CT and MRI parameters showed significantly higher specificity and positive predictive value than CT alone (P ≤ 0.031), without significant difference in sensitivity and negative predictive value. CONCLUSIONS We have demonstrated that the combination of CT and MRI imaging features is helpful for the differentiation of small hepatic abscess from metastasis.
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Zakaria A, Al-Share B, Klapman JB, Dam A. The Role of Endoscopic Ultrasonography in the Diagnosis and Staging of Pancreatic Cancer. Cancers (Basel) 2022; 14:1373. [PMID: 35326524 PMCID: PMC8946253 DOI: 10.3390/cancers14061373] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer is the fourth leading cause of cancer-related death and the second gastrointestinal cancer-related death in the United States. Early detection and accurate diagnosis and staging of pancreatic cancer are paramount in guiding treatment plans, as surgical resection can provide the only potential cure for this disease. The overall prognosis of pancreatic cancer is poor even in patients with resectable disease. The 5-year survival after surgical resection is ~10% in node-positive disease compared to ~30% in node-negative disease. The advancement of imaging studies and the multidisciplinary approach involving radiologists, gastroenterologists, advanced endoscopists, medical, radiation, and surgical oncologists have a major impact on the management of pancreatic cancer. Endoscopic ultrasonography is essential in the diagnosis by obtaining tissue (FNA or FNB) and in the loco-regional staging of the disease. The advancement in EUS techniques has made this modality a critical adjunct in the management process of pancreatic cancer. In this review article, we provide an overall description of the role of endoscopic ultrasonography in the diagnosis and staging of pancreatic cancer.
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Affiliation(s)
- Ali Zakaria
- Department of Gastroenterology-Advanced Endoscopy, H. Lee Moffitt Cancer Center, Tampa, FL 33612, USA; (J.B.K.); (A.D.)
| | - Bayan Al-Share
- Department of Hematology and Oncology, Karmanos Cancer Center, Wayne State University, Detroit, MI 48201, USA;
| | - Jason B. Klapman
- Department of Gastroenterology-Advanced Endoscopy, H. Lee Moffitt Cancer Center, Tampa, FL 33612, USA; (J.B.K.); (A.D.)
| | - Aamir Dam
- Department of Gastroenterology-Advanced Endoscopy, H. Lee Moffitt Cancer Center, Tampa, FL 33612, USA; (J.B.K.); (A.D.)
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Hwang JA, Min JH, Kim SH, Choi SY, Lee JE, Moon JY. Total Bilirubin Level as a Predictor of Suboptimal Image Quality of the Hepatobiliary Phase of Gadoxetic Acid-Enhanced MRI in Patients with Extrahepatic Bile Duct Cancer. Korean J Radiol 2022; 23:389-401. [PMID: 35029076 PMCID: PMC8961017 DOI: 10.3348/kjr.2021.0407] [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] [Revised: 10/16/2021] [Accepted: 10/30/2021] [Indexed: 11/23/2022] Open
Abstract
Objective This study aimed to determine a factor for predicting suboptimal image quality of the hepatobiliary phase (HBP) of gadoxetic acid-enhanced MRI in patients with extrahepatic bile duct (EHD) cancer before MRI examination. Materials and Methods We retrospectively evaluated 259 patients (mean age ± standard deviation: 68.0 ± 8.3 years; 162 male and 97 female) with EHD cancer who underwent gadoxetic acid-enhanced MRI between 2011 and 2017. Patients were divided into a primary analysis set (n = 184) and a validation set (n = 75) based on the diagnosis date of January 2014. Two reviewers assigned the functional liver imaging score (FLIS) to reflect the HBP image quality. The FLIS consists of the sum of three HBP features, each scored on a 0–2 scale: liver parenchymal enhancement, biliary excretion, and signal intensity of the portal vein. Patients were classified into low-FLIS (0–3) or high-FLIS (4–6) groups. Multivariable analysis was performed to determine a predictor of low FLIS using serum biochemical and imaging parameters of cholestasis severity. The optimal cutoff value for predicting low FLIS was obtained using receiver operating characteristic analysis, and validation was performed. Results Of the 259 patients, 140 (54.0%) and 119 (46.0%) were classified into the low-FLIS and high-FLIS groups, respectively. In the primary analysis set, total bilirubin was an independent factor associated with low FLIS (adjusted odds ratio per 1-mg/dL increase, 1.62; 95% confidence interval [CI], 1.32–1.98). The optimal cutoff value of total bilirubin for predicting low FLIS was 2.1 mg/dL with a sensitivity of 95.1% (95% CI: 88.9–98.4) and a specificity of 89.0% (95% CI: 80.2–94.9). In the validation set, the total bilirubin cutoff showed a sensitivity of 92.1% (95% CI: 78.6–98.3) and a specificity of 83.8% (95% CI: 68.0–93.8). Conclusion Serum total bilirubin before acquisition of gadoxetic acid-enhanced MRI may help predict suboptimal HBP image quality in patients with EHD cancer.
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Affiliation(s)
- Jeong Ah Hwang
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ji Hye Min
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Seong Hyun Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seo-Youn Choi
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Ji Eun Lee
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Ji Yoon Moon
- Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Korea
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11
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Zhuo LY, Xing LH, Ma X, Zhang Y, Ma ZP, Yin XP, Wang JN. Differentiating Between an Atypical Hepatic Abscess and Tumor Metastasis Using Magnetic Resonance Imaging and Hepatobiliary Phase Imaging. Infect Drug Resist 2021; 14:3263-3274. [PMID: 34429624 PMCID: PMC8380289 DOI: 10.2147/idr.s318291] [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: 04/30/2021] [Accepted: 07/20/2021] [Indexed: 11/30/2022] Open
Abstract
Objective To identify diffusion-weighted imaging (DWI) patterns and conspicuity discrepancies on hepatobiliary phase imaging (HBPI) to distinguish atypical hepatic abscesses from hepatic metastases. Materials and Methods This retrospective study recruited 31 patients with 43 atypical hepatic abscesses and 32 patients with 35 hepatic metastases who underwent gadobenate dimeglumine-enhanced magnetic resonance imaging. All lesions were confirmed by pathological or clinical diagnosis. For the qualitative and quantitative analyses, the signal intensity, DWI pattern, apparent diffusion coefficient, degree of perilesional edema, perilesional hyperemia, perilesional signal on HBPI, conspicuity, size discrepancy between sequences, contrast-to-noise ratio, signal-to-noise ratio, and relative enhancement ratio on dynamic phases were independently assessed by two radiologists. Significant findings for differentiating the two groups were identified via univariate and multivariate analyses with a nomogram for predicting atypical hepatic abscesses. The interobserver agreement was also analyzed for each variable. Results The multivariate analysis revealed that the conspicuity discrepancy (odds ratio [OR] 34.78, 95% confidence interval [CI] 2.09–579.47, p = 0.013) and non-peripheral high signal intensity (SI) rim on DWI (OR 67.46, 95% CI 2.64, 1723.20, p = 0.011) were significant independent factors for predicting atypical hepatic abscesses. They were also shown to be high predictor points on the nomogram. When any of the set criteria were satisfied, 97.7% of atypical hepatic abscesses were correctly identified, with a specificity of 65.7%. When both criteria were combined, the specificity was up to 100%, with a sensitivity of 44.9%. Conclusion Conspicuity discrepancy and a non-peripheral high SI rim on DWI are reliable and meaningful features that can distinguish atypical hepatic abscesses from hepatic metastases.
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Affiliation(s)
- Li-Yong Zhuo
- Department of CT-MRI Diagnostic, Affiliated Hospital of Hebei University, Baoding, People's Republic of China
| | - Li-Hong Xing
- Department of CT-MRI Diagnostic, Affiliated Hospital of Hebei University, Baoding, People's Republic of China
| | - Xi Ma
- Department of CT-MRI Diagnostic, Affiliated Hospital of Hebei University, Baoding, People's Republic of China
| | - Yu Zhang
- Department of CT-MRI Diagnostic, Affiliated Hospital of Hebei University, Baoding, People's Republic of China
| | - Ze-Peng Ma
- Department of CT-MRI Diagnostic, Affiliated Hospital of Hebei University, Baoding, People's Republic of China
| | - Xiao-Ping Yin
- Department of CT-MRI Diagnostic, Affiliated Hospital of Hebei University, Baoding, People's Republic of China
| | - Jia-Ning Wang
- Department of CT-MRI Diagnostic, Affiliated Hospital of Hebei University, Baoding, People's Republic of China
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12
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Lee DH. Current Status and Recent Update of Imaging Evaluation for Peri-Hilar Cholangiocarcinoma. JOURNAL OF THE KOREAN SOCIETY OF RADIOLOGY 2021; 82:298-314. [PMID: 36238748 PMCID: PMC9431946 DOI: 10.3348/jksr.2021.0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/25/2021] [Accepted: 03/17/2021] [Indexed: 12/15/2022]
Abstract
간문주변부의 해부학적 복잡성으로 인해 간문주변부 담관암은 그 진단과 치료가 어려운 질환으로 알려져 있다. 간문주변부 담관암이 의심되는 환자에 있어서, 영상 검사는 이상 소견의 발견 및 감별 진단, 종양의 종축 침범 부위의 파악, 인접 혈관 침범과 원격 전이 유무의 파악, 그리고 최종적으로 수술적 절제 가능 유무의 평가에 있어 핵심적인 역할을 하고 있다. 이 종설에서는 간문주변부 담관암의 분류 및 종양의 평가를 위해 권고되는 표준 영상 검사의 기법과 간문주변부 담관암의 전형적인 영상 소견에 대해 기술할 예정이다. 종축 방향의 종양 침범 파악, 인접 혈관 침범 및 원격 전이 유무의 평가에 있어서 각 영상 검사 소견과 그 진단능에 대해 논의할 예정이다. 이후 전통적인 절제 가능성 평가의 개념에 대해 고찰하고, 최근의 경향을 소개한다.
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Affiliation(s)
- Dong Ho Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
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13
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Rhee H, Park MS. The Role of Imaging in Current Treatment Strategies for Pancreatic Adenocarcinoma. Korean J Radiol 2020; 22:23-40. [PMID: 32901458 PMCID: PMC7772381 DOI: 10.3348/kjr.2019.0862] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 04/30/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023] Open
Abstract
In pancreatic cancer, imaging plays an essential role in surveillance, diagnosis, resectability evaluation, and treatment response evaluation. Pancreatic cancer surveillance in high-risk individuals has been attempted using endoscopic ultrasound (EUS) or magnetic resonance imaging (MRI). Imaging diagnosis and resectability evaluation are the most important factors influencing treatment decisions, where computed tomography (CT) is the preferred modality. EUS, MRI, and positron emission tomography play a complementary role to CT. Treatment response evaluation is of increasing clinical importance, especially in patients undergoing neoadjuvant therapy. This review aimed to comprehensively review the role of imaging in relation to the current treatment strategy for pancreatic cancer, including surveillance, diagnosis, evaluation of resectability and treatment response, and prediction of prognosis.
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Affiliation(s)
- Hyungjin Rhee
- Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Mi Suk Park
- Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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14
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Lee DH, Kim B, Lee ES, Kim HJ, Min JH, Lee JM, Choi MH, Seo N, Choi SH, Kim SH, Lee SS, Park YS, Chung YE. Radiologic Evaluation and Structured Reporting Form for Extrahepatic Bile Duct Cancer: 2019 Consensus Recommendations from the Korean Society of Abdominal Radiology. Korean J Radiol 2020; 22:41-62. [PMID: 32901457 PMCID: PMC7772383 DOI: 10.3348/kjr.2019.0803] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 12/15/2022] Open
Abstract
Radiologic imaging is important for evaluating extrahepatic bile duct (EHD) cancers; it is used for staging tumors and evaluating the suitability of surgical resection, as surgery may be contraindicated in some cases regardless of tumor stage. However, the published general recommendations for EHD cancer and recommendations guided by the perspectives of radiologists are limited. The Korean Society of Abdominal Radiology (KSAR) study group for EHD cancer developed key questions and corresponding recommendations for the radiologic evaluation of EHD cancer and organized them into 4 sections: nomenclature and definition, imaging technique, cancer evaluation, and tumor response. A structured reporting form was also developed to allow the progressive accumulation of standardized data, which will facilitate multicenter studies and contribute more evidence for the development of recommendations.
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Affiliation(s)
- Dong Ho Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Bohyun Kim
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Eun Sun Lee
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hyoung Jung Kim
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Ji Hye Min
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Min Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Korea.,Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Moon Hyung Choi
- Department of Radiology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Nieun Seo
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Hyun Choi
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Seong Hyun Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seung Soo Lee
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Yang Shin Park
- Department of Radiology, Korea University Guro Hospital, Seoul, Korea
| | - Yong Eun Chung
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea.
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15
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Hong SB, Choi SH, Kim KW, Kim SY, Kim JH, Kim S, Lee NK. Meta‐analysis of MRI for the diagnosis of liver metastasis in patients with pancreatic adenocarcinoma. J Magn Reson Imaging 2019; 51:1737-1744. [DOI: 10.1002/jmri.26969] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 09/27/2019] [Indexed: 12/12/2022] Open
Affiliation(s)
- Seung Baek Hong
- Department of Radiology, Biomedical Research InstitutePusan National University Hospital, Pusan National University School of Medicine Korea
| | - Sang Hyun Choi
- Department of Radiology and the Research Institute of RadiologyUniversity of Ulsan College of Medicine, Asan Medical Center Korea
| | - Kyung won Kim
- Department of Radiology and the Research Institute of RadiologyUniversity of Ulsan College of Medicine, Asan Medical Center Korea
| | - So Yeon Kim
- Department of Radiology and the Research Institute of RadiologyUniversity of Ulsan College of Medicine, Asan Medical Center Korea
| | - Jin Hee Kim
- Department of Radiology and the Research Institute of RadiologyUniversity of Ulsan College of Medicine, Asan Medical Center Korea
| | - Suk Kim
- Department of Radiology, Biomedical Research InstitutePusan National University Hospital, Pusan National University School of Medicine Korea
| | - Nam Kyung Lee
- Department of Radiology, Biomedical Research InstitutePusan National University Hospital, Pusan National University School of Medicine Korea
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Wang N, Ju Y, Wu J, Liu A, Chen A, Liu J, Liu Y, Li J. Differentiation of liver abscess from liver metastasis using dual-energy spectral CT quantitative parameters. Eur J Radiol 2019; 113:204-208. [DOI: 10.1016/j.ejrad.2019.02.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/30/2019] [Accepted: 02/17/2019] [Indexed: 01/14/2023]
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17
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Oh JG, Choi SY, Lee MH, Lee JE, Yi BH, Kim SS, Min JH, Lee B. Differentiation of hepatic abscess from metastasis on contrast-enhanced dynamic computed tomography in patients with a history of extrahepatic malignancy: emphasis on dynamic change of arterial rim enhancement. Abdom Radiol (NY) 2019; 44:529-538. [PMID: 30196363 DOI: 10.1007/s00261-018-1766-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVES The objective of the study is to identify computed tomography (CT) findings that differentiate hepatic abscess from hepatic metastasis in a patient with a history of extrahepatic malignancy. MATERIALS AND METHODS This retrospective study included 30 patients with 93 hepatic abscesses and 40 patients with 125 hepatic metastases who had a history of extrahepatic malignancy and underwent contrast-enhanced dynamic CT with arterial phase (AP) and portal venous phase (PVP). The diagnosis of hepatic abscess and hepatic metastasis was made using pathological confirmation or clinical diagnosis. Margin, patchy parenchymal enhancement, arterial rim enhancement, dynamic change of arterial rim enhancement, size discrepancy of lesions between arterial and portal phases, bile duct dilatation, perilesional hyperemia, and perilesional low density were evaluated by two radiologists independently. Significant findings for differentiating two groups were identified at univariate and multivariate analysis with nomogram for predicting hepatic abscess. Interobserver agreement was also analyzed for each variable. RESULTS Multivariate analysis revealed that patchy parenchymal enhancement (P < 0.001), arterial rim enhancement persistent through PVP (P < 0.001), and perilesional hyperemia (P = 0.013) were independent significant findings to predict hepatic abscess than metastasis. Among them, arterial rim enhancement persistent through PVP showed a highest odds ratio (OR 33.73) on multivariate analysis and a highest predictor point on a nomogram for predicting hepatic abscess. When two of these three criteria were combined, 80.7% (75/93) of hepatic abscess were correctly identified, with a specificity of 85.6% (107/125). When all three criteria were satisfied, specificity was up to 100% (125/125). CONCLUSIONS At contrast-enhanced dynamic CT, patchy parenchymal enhancement, arterial rim enhancement persistent through PVP, perilesional hyperemia, and their combinations may be reliable CT features for differentiating hepatic abscess from metastasis in patients with a history of primary extrahepatic malignancy.
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