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Bilreiro C, Andrade L, Santiago I, Marques RM, Matos C. Imaging of pancreatic ductal adenocarcinoma - An update for all stages of patient management. Eur J Radiol Open 2024; 12:100553. [PMID: 38357385 PMCID: PMC10864763 DOI: 10.1016/j.ejro.2024.100553] [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: 10/15/2023] [Revised: 02/02/2024] [Accepted: 02/03/2024] [Indexed: 02/16/2024] Open
Abstract
Background Pancreatic ductal adenocarcinoma (PDAC) is a common and lethal cancer. From diagnosis to disease staging, response to neoadjuvant therapy assessment and patient surveillance after resection, imaging plays a central role, guiding the multidisciplinary team in decision-planning. Review aims and findings This review discusses the most up-to-date imaging recommendations, typical and atypical findings, and issues related to each step of patient management. Example cases for each relevant condition are presented, and a structured report for disease staging is suggested. Conclusion Despite current issues in PDAC imaging at different stages of patient management, the radiologist is essential in the multidisciplinary team, as the conveyor of relevant imaging findings crucial for patient care.
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Affiliation(s)
- Carlos Bilreiro
- Radiology Department, Champalimaud Foundation, Lisbon, Portugal
- Champalimaud Research, Champalimaud Foundation, Lisbon, Portugal
- Nova Medical School, Lisbon, Portugal
| | - Luísa Andrade
- Radiology Department, Champalimaud Foundation, Lisbon, Portugal
| | - Inês Santiago
- Radiology Department, Champalimaud Foundation, Lisbon, Portugal
| | - Rui Mateus Marques
- Nova Medical School, Lisbon, Portugal
- Radiology Department, Hospital de S. José, Lisbon, Portugal
| | - Celso Matos
- Radiology Department, Champalimaud Foundation, Lisbon, Portugal
- Champalimaud Research, Champalimaud Foundation, Lisbon, Portugal
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Ahmed SA, Mourad AF, Hassan RA, Ibrahim MAE, Soliman A, Aboeleuon E, Elbadee OMA, Hetta HF, Jabir MA. Preoperative CT staging of borderline pancreatic cancer patients after neoadjuvant treatment: accuracy in the prediction of vascular invasion and resectability. Abdom Radiol (NY) 2021; 46:280-289. [PMID: 32488556 DOI: 10.1007/s00261-020-02605-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVES To assess the utility of MDCT tumor-vascular interface criteria for predicting vascular invasion and resectability in borderline pancreatic cancer (BRPC) patients after neoadjuvant therapy (NAT). METHODS This prospective study included 90 patients with BRPC who finished NAT, showed no progression in preoperative CTs and underwent surgery. Two radiologists independently assessed preoperative vessel-tumor interface criteria. The area under the ROC curve (AUC) was used to evaluate the diagnostic performance for predicting vascular invasions and resectability using surgical and pathological results as the gold standard. Inter-reader agreement was assessed using the κ coefficient. RESULTS Pathologic vascular invasion was confirmed in 47 (54.7%) veins and 14 (16.3%) arteries. R0 resection was achieved in (82.6%71/86) pancreatic resection. Using criteria of circumferential interface ≥ 180 degrees with contour deformity ≥ grade 3 and/or length of tumor contact > 2 cm to predict vascular invasion, the AUCs for the two readers were 0.85-0.88 for arterial invasion and 0.92-0.87 for venous invasion. Using criteria of circumferential interface ≤ 180° with contour deformity ≤ grade 2 and/or length of tumor contact < 2 cm to predict R0 resection, the AUCs was 0.85-0.86 for the two readers. The overall inter-reader agreement was good (κ = 0.75-0.80). The κ values for venous invasion, arterial invasion and R0 resection were 0.76, 0.78, and 0.80. CONCLUSION Tumor-vessel criteria demonstrated good diagnostic performance and reproducibility in the prediction of vascular invasion after NAT in BRPC. These criteria could be helpful in the prediction of R0 resection in cases with only venous involvement.
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Chen F, Zhou Y, Qi X, Zhang R, Gao X, Xia W, Zhang L. Radiomics-Assisted Presurgical Prediction for Surgical Portal Vein-Superior Mesenteric Vein Invasion in Pancreatic Ductal Adenocarcinoma. Front Oncol 2020; 10:523543. [PMID: 33282722 PMCID: PMC7706539 DOI: 10.3389/fonc.2020.523543] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 10/20/2020] [Indexed: 12/11/2022] Open
Abstract
Objectives To develop a radiomics signature for predicting surgical portal vein-superior mesenteric vein (PV-SMV) in patients with pancreatic ductal adenocarcinoma (PDAC) and measure the effect of providing the predictions of radiomics signature to radiologists with different diagnostic experiences during imaging interpretation. Methods Between February 2008 and June 2020, 146 patients with PDAC in pancreatic head or uncinate process from two institutions were retrospectively included and randomly split into a training (n = 88) and a validation (n =58) cohort. Intraoperative vascular exploration findings were used to identify surgical PV-SMV invasion. Radiomics features were extracted from the portal venous phase CT images. Radiomics signature was built with a linear elastic-net regression model. Area under receiver operating characteristic curve (AUC) of the radiomics signature was calculated. A senior and a junior radiologist independently review CT scans and made the diagnosis for PV-SMV invasion both with and without radiomics score (Radscore) assistance. A 2-sided Pearson's chi-squared test was conducted to evaluate whether there was a difference in sensitivity, specificity, and accuracy between the radiomics signature and the unassisted radiologists. To assess the incremental value of providing Radscore predictions to the radiologists, we compared the performance between unassisted evaluation and Radscore-assisted evaluation by using the McNemar test. Results Numbers of patients identified as presence of surgical PV-SMV invasion were 33 (37.5%) and 19 (32.8%) in the training and validation cohort, respectively. The radiomics signature achieved an AUC of 0.848 (95% confidence interval, 0.724-0.971) in the validation cohort and had a comparable sensitivity, specificity, and accuracy as the senior radiologist in predicting PV-SMV invasion (all p-values > 0.05). Providing predictions of radiomics signature increased both radiologists' sensitivity in identifying PV-SMV invasion, while only the increase of the junior radiologist was significant (63.2 vs 89.5%, p-value = 0.025) instead of the senior radiologist (73.7 vs 89.5%, p-value = 0.08). Both radiologists' accuracy had no significant increase when provided radiomics signature assistance (both p-values > 0.05). Conclusions The radiomics signature can predict surgical PV-SMV invasion in patients with PDAC and may have incremental value to the diagnostic performance of radiologists during imaging interpretation.
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Affiliation(s)
- Fangming Chen
- Department of Radiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Yongping Zhou
- Department of Hepatobiliary Surgery, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Xiumin Qi
- Department of Pathology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Rui Zhang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Xin Gao
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Wei Xia
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Lei Zhang
- Department of Radiology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
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Abstract
Importance In the past few decades, there has been rapid advancements in imaging technologies that have become irreplaceable in the pre-operative assessment of patients with pancreatic tumors. Modern imaging modalities, including computed tomography (CT) and endoscopic ultrasound (EUS), can provide critical information of the absence or presence of metastatic disease in pancreatic cancer, as well as details on the local extent and resectability, allowing for the selection of stage appropriate treatments and pre-operatively determined surgical approach. Objective The aim of this review is to discuss staging, resectability, and imaging for patients with pancreatic tumors. Evidence Review A literature review was performed of articles relevant to the topics of staging, resectability, and imaging of pancreatic tumors. Imaging modalities included CT, EUS, magnetic resonance imaging (MRI), positron emission tomography (PET), antibody-based and narrow band imaging. Findings CT pancreas protocol combined with EUS serve as the primary modalities in diagnosis, staging, and surgical planning in patients with pancreatic tumors. MRI is an alternative to CT with near equivalent utility in the pre-operative setting. In some circumstances, PET-CT may be a cost-effective initial study to detect distant disease. Conclusions and Relevance Current imaging technologies play a critical role in the evaluation of patients with pancreatic tumors. Advances in the past 3 decades in imaging technologies have revolutionized the process of assessment of stage and resectability in patients with pancreatic tumors. Future imaging technologies will address current limitation in the evaluation of occult metastatic disease.
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Elbanna KY, Jang HJ, Kim TK. Imaging diagnosis and staging of pancreatic ductal adenocarcinoma: a comprehensive review. Insights Imaging 2020; 11:58. [PMID: 32335790 PMCID: PMC7183518 DOI: 10.1186/s13244-020-00861-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 03/06/2020] [Indexed: 02/06/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) has continued to have a poor prognosis for the last few decades in spite of recent advances in different imaging modalities mainly due to difficulty in early diagnosis and aggressive biological behavior. Early PDAC can be missed on CT due to similar attenuation relative to the normal pancreas, small size, or hidden location in the uncinate process. Tumor resectability and its contingency on the vascular invasion most commonly assessed with multi-phasic thin-slice CT is a continuously changing concept, particularly in the era of frequent neoadjuvant therapy. Coexistent celiac artery stenosis may affect the surgical plan in patients undergoing pancreaticoduodenectomy. In this review, we discuss the challenges related to the imaging of PDAC. These include radiological and clinical subtleties of the tumor, evolving imaging criteria for tumor resectability, preoperative diagnosis of accompanying celiac artery stenosis, and post-neoadjuvant therapy imaging. For each category, the key imaging features and potential pitfalls on cross-sectional imaging will be discussed. Also, we will describe the imaging discriminators of potential mimickers of PDAC.
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Affiliation(s)
- Khaled Y Elbanna
- Joint Department of Medical Imaging, University Health Network, Mount Sinai Hospital and Women's College Hospital, University of Toronto, Toronto, ON, Canada.
| | - Hyun-Jung Jang
- Joint Department of Medical Imaging, University Health Network, Mount Sinai Hospital and Women's College Hospital, University of Toronto, Toronto, ON, Canada
| | - Tae Kyoung Kim
- Joint Department of Medical Imaging, University Health Network, Mount Sinai Hospital and Women's College Hospital, University of Toronto, Toronto, ON, Canada
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Yamada K, Kawashima H, Ohno E, Ishikawa T, Tanaka H, Nakamura M, Miyahara R, Ishigami M, Hirooka Y, Fujishiro M. Diagnosis of vascular invasion in pancreatic ductal adenocarcinoma using endoscopic ultrasound elastography. BMC Gastroenterol 2020; 20:81. [PMID: 32228472 PMCID: PMC7106834 DOI: 10.1186/s12876-020-01228-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/19/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Vascular invasion is an important criterion for resectability and deciding the therapeutic strategy for pancreatic ductal adenocarcinoma (PDAC), but imaging diagnosis is currently difficult. Endoscopic ultrasound (EUS) elastography (EG) images have band-like artifacts on the border between tumor and vessel due to different movement if the tumor is not connected to the vessel, i.e., no invasion. Based on this phenomenon, we assessed the usefulness of EUS-EG in the diagnosis of vascular invasion in PDAC. METHODS The subjects were 44 out of 313 patients with PDAC who underwent EUS between January 2015 and November 2018, followed by surgery, no chemotherapy or radiotherapy, and pathological evaluation. Diagnostic accuracies of vascular invasion using dynamic computed tomography (CT), EUS B-mode and EUS-EG were compared with histopathological diagnosis. RESULTS In 44 subjects (48 sites) who underwent both dynamic CT and EUS-B mode, the sensitivity, specificity and accuracy were 0.733, 0.697 and 0.708 on dynamic CT (48 sites); 0.733, 0.606 and 0.646 in EUS B-mode (48 sites); and 0.917, 0.900 and 0.906 in EUS-EG (32 sites). In 27 subjects (29 sites) with a tumor contacting a vessel with no vascular obstruction or stenosis on dynamic CT, the sensitivity, specificity and accuracy were 0.556, 0.750 and 0.690 on dynamic CT; 0.667, 0.700 and 0.690 in EUS B-mode; and 0.889, 0.850 and 0.862 in EUS-EG. CONCLUSIONS These results suggest that EUS combined with EG improves diagnostic performance of vascular invasion in PDAC, especially in cases of which vascular invasion cannot be clearly assessed by dynamic CT.
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Affiliation(s)
- Kenta Yamada
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Hiroki Kawashima
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan.
| | - Eizaburo Ohno
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Takuya Ishikawa
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Hiroyuki Tanaka
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Masanao Nakamura
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Ryoji Miyahara
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Masatoshi Ishigami
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Yoshiki Hirooka
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 kutsukake-cho dengakekakubo, Toyoake, 470-1192, Japan
| | - Mitsuhiro Fujishiro
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
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Kloth C, Vogele D, Brunner H, Beer M, Schmidt SA. Pathognomonic imaging signs in abdominal radiology. Abdom Radiol (NY) 2020; 45:576-586. [PMID: 31834459 DOI: 10.1007/s00261-019-02331-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The imaging evaluation of the abdomen is of crucial importance for every radiologist. In addition to ultrasound, conventional radiographs and contrast-enhanced computed tomography (CT) are the most common imaging procedures in the abdominal region. Numerous pathognomonic signs should be known in this context by every radiologist. Radiographs of the abdomen are an often used first step in radiologic imaging, while CT examinations are carried out for further differentiation, in oncological settings and in time-critical emergency situations. A fast and clear assignment of these signs to a specific disease is the basis for a correct diagnosis. This pictorial review describes the most common pathognomonic signs in abdominal imaging. The knowledge of these pictograms is therefore essential for radiologists interested in abdominal medicine and should also be addressed in training and further education.
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Affiliation(s)
- Christopher Kloth
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081, Ulm, Germany.
| | - Daniel Vogele
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Horst Brunner
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Meinrad Beer
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Stefan Andreas Schmidt
- Department of Diagnostic and Interventional Radiology, Ulm University Medical Center, Albert-Einstein-Allee 23, 89081, Ulm, Germany
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Wolske KM, Ponnatapura J, Kolokythas O, Burke LMB, Tappouni R, Lalwani N. Chronic Pancreatitis or Pancreatic Tumor? A Problem-solving Approach. Radiographics 2019; 39:1965-1982. [PMID: 31584860 DOI: 10.1148/rg.2019190011] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Certain inflammatory pancreatic abnormalities may mimic pancreatic ductal adenocarcinoma at imaging, which precludes accurate preoperative diagnosis and may lead to unnecessary surgery. Inflammatory conditions that may appear masslike include mass-forming chronic pancreatitis, focal autoimmune pancreatitis, and paraduodenal pancreatitis or "groove pancreatitis." In addition, obstructive chronic pancreatitis can mimic an obstructing ampullary mass or main duct intraductal papillary mucinous neoplasm. Secondary imaging features such as the duct-penetrating sign, biliary or main pancreatic duct skip strictures, a capsulelike rim, the pancreatic duct-to-parenchyma ratio, displaced calcifications in patients with chronic calcific pancreatitis, the "double duct" sign, and vessel encasement or displacement can help to suggest the possibility of an inflammatory mass or a neoplastic process. An awareness of the secondary signs that favor a diagnosis of malignant or inflammatory lesions in the pancreas can help the radiologist to perform the differential diagnosis and determine the degree of suspicion for malignancy. Repeat biopsy or surgical resection may be necessary to achieve an accurate diagnosis and prevent unnecessary surgery for inflammatory conditions. Online supplemental material and DICOM image stacks are available for this article. ©RSNA, 2019.
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Affiliation(s)
- Kristy Marie Wolske
- From the Departments of Radiology of Wake Forest Baptist Medical Center, 1 Medical Center Blvd, Winston-Salem, NC 27157 (K.M.W., J.P., R.T., N.L.); University of Washington, Seattle, Wash (O.K.); and University of North Carolina at Chapel Hill, Chapel Hill, NC (L.M.B.B.)
| | - Janardhana Ponnatapura
- From the Departments of Radiology of Wake Forest Baptist Medical Center, 1 Medical Center Blvd, Winston-Salem, NC 27157 (K.M.W., J.P., R.T., N.L.); University of Washington, Seattle, Wash (O.K.); and University of North Carolina at Chapel Hill, Chapel Hill, NC (L.M.B.B.)
| | - Orpheus Kolokythas
- From the Departments of Radiology of Wake Forest Baptist Medical Center, 1 Medical Center Blvd, Winston-Salem, NC 27157 (K.M.W., J.P., R.T., N.L.); University of Washington, Seattle, Wash (O.K.); and University of North Carolina at Chapel Hill, Chapel Hill, NC (L.M.B.B.)
| | - Lauren M B Burke
- From the Departments of Radiology of Wake Forest Baptist Medical Center, 1 Medical Center Blvd, Winston-Salem, NC 27157 (K.M.W., J.P., R.T., N.L.); University of Washington, Seattle, Wash (O.K.); and University of North Carolina at Chapel Hill, Chapel Hill, NC (L.M.B.B.)
| | - Rafel Tappouni
- From the Departments of Radiology of Wake Forest Baptist Medical Center, 1 Medical Center Blvd, Winston-Salem, NC 27157 (K.M.W., J.P., R.T., N.L.); University of Washington, Seattle, Wash (O.K.); and University of North Carolina at Chapel Hill, Chapel Hill, NC (L.M.B.B.)
| | - Neeraj Lalwani
- From the Departments of Radiology of Wake Forest Baptist Medical Center, 1 Medical Center Blvd, Winston-Salem, NC 27157 (K.M.W., J.P., R.T., N.L.); University of Washington, Seattle, Wash (O.K.); and University of North Carolina at Chapel Hill, Chapel Hill, NC (L.M.B.B.)
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Kaissis GA, Lohöfer FK, Ziegelmayer S, Danner J, Jäger C, Schirren R, Ankerst D, Ceyhan GO, Friess H, Rummeny EJ, Weichert W, Braren RF. Borderline-resectable pancreatic adenocarcinoma: Contour irregularity of the venous confluence in pre-operative computed tomography predicts histopathological infiltration. PLoS One 2019; 14:e0208717. [PMID: 30601813 PMCID: PMC6314575 DOI: 10.1371/journal.pone.0208717] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 11/22/2018] [Indexed: 01/27/2023] Open
Abstract
PURPOSE The purpose of the current study was to compare CT-signs of portal venous confluence infiltration for actual histopathological infiltration of the vein or the tumor/vein interface (TVI) in borderline resectable pancreatic ductal adenocarcinoma (PDAC). METHODS AND MATERIALS 101 patients with therapy-naïve, primarily resected PDAC of the pancreatic head without arterial involvement were evaluated. The portal venous confluence was assessed for contour irregularity (defined as infiltration) and degree of contact. The sensitivity and specificity of contour irregularity versus tumor to vein contact >180° as well as the combination of the signs for tumor cell infiltration of the vessel wall or TVI was calculated. Overall survival (OS) was compared between groups. RESULTS Sensitivity and specificity of contour irregularity for identification of tumor infiltration of the portal venous confluence or the TVI was higher compared to tumor to vessel contact >180° for tumor cell infiltration (96%/79% vs. 91%/38% respectively, p<0.001). The combination of the signs increased specificity to 92% (sensitivity 88%). Patients with contour irregularity/ tumor to vein contact >180°/ both signs had significantly worse overall survival (16.2 vs. 26.5 months/ 17.9 vs. 37.4 months/ 18.5 vs. 26.5 months respectively, all p<0.05). CONCLUSION Portal venous confluence contour irregularity is a strong predictor of actual tumor cell infiltration of the vessel wall or the TVI and should be noted as such in radiological reports.
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Affiliation(s)
- Georgios A. Kaissis
- Institute for diagnostic and interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Fabian K. Lohöfer
- Institute for diagnostic and interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Sebastian Ziegelmayer
- Institute for diagnostic and interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Julia Danner
- Institute for diagnostic and interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Carsten Jäger
- Department of Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Rebekka Schirren
- Department of Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Donna Ankerst
- Department of Mathematics, Technische Universität München, Garching, Germany
| | - Güralp O. Ceyhan
- Department of Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Helmut Friess
- Department of Surgery, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Ernst J. Rummeny
- Institute for diagnostic and interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Wilko Weichert
- Department of General Pathology and Pathological Anatomy, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Rickmer F. Braren
- Institute for diagnostic and interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
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Kim M, Kang TW, Cha DI, Kim YK, Kim SH, Jang KT, Han IW, Sohn I. Prediction and clinical implications of portal vein/superior mesenteric vein invasion in patients with resected pancreatic head cancer: the significance of preoperative CT parameters. Clin Radiol 2018; 73:564-573. [PMID: 29519500 DOI: 10.1016/j.crad.2018.01.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 01/19/2018] [Indexed: 12/12/2022]
Abstract
AIM To determine the preoperative computed tomography (CT) parameters that predict portal vein/superior mesenteric vein (PV-SMV) invasion in patients with pancreatic head cancer, and to assess whether PV-SMV invasion affects patient survival. MATERIALS AND METHODS Sixty patients with PV-SMV invasion, and 60 randomly selected patients without it, who had undergone preoperative CT and subsequent surgery for pancreatic head cancer were enrolled. The following CT parameters were evaluated using multivariate logistic regression and receiver operating characteristic analyses to predict vessel invasion (tumour size and margin, length of involved vessel, distance from the tumour to the vessel, vessel irregularity, the teardrop sign, and tumour-vein interface [TVI]). The Cox proportional hazard model was used to evaluate the effects of PV-SMV invasion on survival. RESULTS In multivariate analysis, tumour size (odds ratio [OR]=1.99) and TVI (OR=3.79 [≤90°], 20.66 [>90°, ≤180°], and 47.24 [>180°]) were independent CT predictors of PV-SMV invasion (p<0.05); they achieved a sensitivity of 87%, a specificity of 75%, and an accuracy of 81%; however, PV-SMV invasion did not affect patient survival after surgery (p=0.374). CONCLUSION In patients with pancreatic head cancer, preoperative CT parameters can predict PV-SMV invasion with high accuracy. PV-SMV invasion did not affect treatment outcome after surgery.
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Affiliation(s)
- M Kim
- Department of Radiology, Hanyang University College of Medicine, Hanyang University Seoul Hospital, Seoul, Republic of Korea
| | - T W Kang
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - D I Cha
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y K Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S H Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - K-T Jang
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - I W Han
- Department of General Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - I Sohn
- Statistics and Data Center, Samsung Medical Center, Seoul, Republic of Korea
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Modified National Comprehensive Cancer Network Criteria for Assessing Resectability of Pancreatic Ductal Adenocarcinoma. AJR Am J Roentgenol 2018; 210:1252-1258. [PMID: 29629801 DOI: 10.2214/ajr.17.18595] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE The objective of our study was to assess the preoperative resectability of pancreatic ductal adenocarcinoma (PDAC) using the National Comprehensive Cancer Network (NCCN) guideline, the general rules of the Japan Pancreas Society (JPS), and both of them combined. MATERIALS AND METHODS Eighty-six consecutive patients with PDAC (50 men and 36 women; mean age ± SD, 70.8 ± 9.0 years; age range, 49-86 years) underwent dynamic contrast-enhanced CT. Following the NCCN guideline, the degree of vascular invasion was evaluated to determine the NCCN score: 0 points for absence of vascular invasion, 1 point for tumor contact ≤ 180°, and 2 points for tumor contact > 180°. Direct invasion to adjacent structures was rated according to the general rules of JPS to determine the JPS score: 0 points for absence and 1 point for presence. The NCCN score, JPS score, and sum of the two scores, which we refer to as the "combined score," were compared with histopathologic or intraoperative findings as well as for the differentiation of R0 resection (negative resection margins) from R1 (microscopic tumor infiltration) and R2 (macroscopic residual tumor) using ROC curve analysis. RESULTS The sensitivities, specificities, and areas under the ROC curves (AUCs) for the differentiation of R0 from R1 and R2 were 100.0%, 40.0%, and 0.725, respectively, with the NCCN score; 63.9%, 84.0%, and 0.824 with the JPS score; and 86.9%, 68.0%, and 0.874 with the combined score. The AUC of the combined score was significantly greater than that of the NCCN score (p = 0.0059). CONCLUSION The assessment of resectability of PDAC based on the combined criteria of the NCCN guideline and general rules of JPS was superior to that based on either criterion alone.
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Montejo Gañán I, Ángel Ríos L, Sarría Octavio de Toledo L, Martínez Mombila M, Ros Mendoza L. Staging pancreatic carcinoma by computed tomography. RADIOLOGIA 2018. [DOI: 10.1016/j.rxeng.2017.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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14
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Montejo Gañán I, Ángel Ríos LF, Sarría Octavio de Toledo L, Martínez Mombila ME, Ros Mendoza LH. Staging pancreatic carcinoma by computed tomography. RADIOLOGIA 2018; 60:10-23. [PMID: 29078990 DOI: 10.1016/j.rx.2017.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 02/08/2023]
Abstract
Pancreatic carcinoma is becoming more common in our environment; the mortality rate for this tumor has barely changed over the last 20 years. Early diagnosis and accurate staging are crucial to ensure an appropriate therapeutic approach, which should aim to improve survival in patients in whom complete resection is possible and to minimize surgical morbidity and mortality in those with a high risk of residual disease after the intervention. Various imaging techniques are used for tumor staging: multidetector computed tomography (CT), magnetic resonance imaging, positron emission tomography (PET)-CT, endoscopic ultrasound, and diagnostic laparoscopy. Currently, multidetector CT is the technique of choice for the study of pancreatic tumors; thus, this article aims to review the state of the art in staging adenocarcinoma of the pancreas, focusing mainly on the applications and limitations of this technique.
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Affiliation(s)
- I Montejo Gañán
- Servicio de Radiodiagnóstico, Hospital Universitario Miguel Servet, Zaragoza, España.
| | - L F Ángel Ríos
- Servicio de Radiodiagnóstico, Hospital Universitario Miguel Servet, Zaragoza, España
| | | | - M E Martínez Mombila
- Servicio de Radiodiagnóstico, Hospital Universitario Miguel Servet, Zaragoza, España
| | - L H Ros Mendoza
- Servicio de Radiodiagnóstico, Hospital Universitario Miguel Servet, Zaragoza, España
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15
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Shen YN, Bai XL, Li GG, Liang TB. Review of radiological classifications of pancreatic cancer with peripancreatic vessel invasion: are new grading criteria required? Cancer Imaging 2017; 17:14. [PMID: 28477615 PMCID: PMC5420088 DOI: 10.1186/s40644-017-0115-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/27/2017] [Indexed: 12/11/2022] Open
Abstract
Pancreatic cancer is mainly diagnosed at an advanced stage when adjacent vessel invasion is present; however, radical resection is potentially curative for selected patients with adjacent vessel invasion. Therefore, accurately judging the resectability of patients with adjacent vessel invasion represents a crucially important step in diagnosis and treatment. Currently, decisions regarding resectability are based on imaging studies, commonly contrast computed tomography (CT). Several radiological classifications have been published for vascular infiltration in pancreatic cancer. However, radiologists always formulate these CT grading systems according to their own experience, resulting in different judgment methods and parameters. And it is controversial in evaluating performance and clinical application. Besides, the conventional CT grading systems mainly focus on the evaluation of vessel invasion so as to less on the outcome of patient evaluation. In this review, we summarize the mainstream CT grading systems for vascular invasion in pancreatic cancer, with the aim of improving the clinical value of CT grading systems for predicting resectability and survival.
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Affiliation(s)
- Y N Shen
- Department of Hepatobiliary and Pancreatic Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang University, Jiefang Road, Shangcheng District, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China
| | - X L Bai
- Department of Hepatobiliary and Pancreatic Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang University, Jiefang Road, Shangcheng District, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China
| | - G G Li
- Department of Hepatobiliary and Pancreatic Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang University, Jiefang Road, Shangcheng District, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China
| | - T B Liang
- Department of Hepatobiliary and Pancreatic Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang University, Jiefang Road, Shangcheng District, Hangzhou, China. .,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China.
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16
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Yeh R, Steinman J, Luk L, Kluger MD, Hecht EM. Imaging of pancreatic cancer: what the surgeon wants to know. Clin Imaging 2017; 42:203-217. [DOI: 10.1016/j.clinimag.2016.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 09/14/2016] [Accepted: 10/03/2016] [Indexed: 02/07/2023]
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17
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Zaky AM, Wolfgang CL, Weiss MJ, Javed AA, Fishman EK, Zaheer A. Tumor-Vessel Relationships in Pancreatic Ductal Adenocarcinoma at Multidetector CT: Different Classification Systems and Their Influence on Treatment Planning. Radiographics 2017; 37:93-112. [DOI: 10.1148/rg.2017160054] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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Cassinotto C, Sa-Cunha A, Trillaud H. Radiological evaluation of response to neoadjuvant treatment in pancreatic cancer. Diagn Interv Imaging 2016; 97:1225-1232. [PMID: 27692675 DOI: 10.1016/j.diii.2016.07.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 07/18/2016] [Indexed: 12/18/2022]
Abstract
Neoadjuvant chemotherapy has become common practice in the management of patients with non-metastatic pancreatic adenocarcinoma. This strategy helps better select patients who would benefit from surgical resection and also increase the number of patients amenable to surgical resection whose tumor seemed too locally advanced on initial imaging. However, several studies have shown that the radiological evaluation of the response after neoadjuvant therapy is difficult for pancreatic carcinoma. This article reviews the scientific basis of neoadjuvant therapy for non-metastatic pancreatic cancer and provides an update on tumor response evaluation with imaging after neoadjuvant treatment.
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Affiliation(s)
- C Cassinotto
- Department of Diagnostic and Interventional Imaging, Hôpital du Haut-Lévèque, University Hospital of Bordeaux, Pessac, France.
| | - A Sa-Cunha
- Department of Hepatobilliary Surgery and Liver Transplantation, Centre Hépatobiliaire, Hôpital Paul-Brousse, Villejuif, France
| | - H Trillaud
- Department of Diagnostic and Interventional Imaging, Hôpital du Haut-Lévèque, University Hospital of Bordeaux, Pessac, France
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19
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Pietryga JA, Morgan DE. Imaging preoperatively for pancreatic adenocarcinoma. J Gastrointest Oncol 2015; 6:343-57. [PMID: 26261722 DOI: 10.3978/j.issn.2078-6891.2015.024] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 01/22/2015] [Indexed: 12/22/2022] Open
Abstract
Pancreatic cancer is a highly lethal malignancy which is increasing in incidence and mortality. The fourth leading cause of cancer death in the U.S., pancreatic cancer is projected to become the second leading cause of cancer death by 2020. Patients with pancreatic cancer have an abysmal 5-year survival of 6%, and 90% of these patients eventually die from the disease. This is in large part due to the commonly advanced stage of disease at the time of diagnosis. Currently, the only potentially curative therapy for pancreatic carcinoma is complete surgical resection. Patients who undergo incomplete resection with residual disease have similar survival rates to those patients with metastatic disease and should be spared this relatively morbid surgery. Thus, the key to impacting prognosis is the detection of smaller and earlier stage lesions, and the key to optimal management is accurately determining which patients have potentially resectable surgery and which patients would not benefit from surgery. Cross-sectional imaging plays an essential role in both the diagnosis and appropriate staging of pancreatic carcinoma. The diagnosis and staging of pancreatic adenocarcinoma is performed with cross-sectional imaging. Multi-detector computed tomography (MDCT) is the most commonly used, best-validated imaging modality for the diagnosis and staging of pancreatic cancer. Modern contrast-enhanced magnetic resonance imaging (MRI) has been demonstrated to be equivalent to MDCT in detection and staging of pancreatic cancer. Endoscopic ultrasound (EUS) is very sensitive for detecting pancreatic masses; however, due to limitations in adequate overall abdominal staging, it is generally used in addition to or after MDCT. Transabdominal ultrasound and positron emission tomography/computed tomography (PET/CT) have limited roles in the diagnosis and staging of pancreatic cancer. Preoperative imaging is used to characterize patients as having resectable disease, borderline resectable disease, locally advanced disease (unresectable) and metastatic disease (unresectable). As the definitions of borderline resectable and unresectable may vary from institution to institution and within institutions, it is essential to accurately assess and describe the factors relevant to staging including: local extent of tumor, vascular involvement, lymph node involvement and distant metastatic disease. To facilitate this, standardized reporting templates for pancreatic ductal adenocarcinoma have been created and published. Structured reporting for pancreatic cancer has been reported to provide superior evaluation of pancreatic cancer, facilitate surgical planning, and increase surgeons' confidence about tumor resectability.
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Affiliation(s)
- Jason Alan Pietryga
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Desiree E Morgan
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
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Kim SH, Lee JM, Lee ES, Baek JH, Kim JH, Han JK, Choi BI. Intraductal papillary mucinous neoplasms of the pancreas: evaluation of malignant potential and surgical resectability by using MR imaging with MR cholangiography. Radiology 2014; 274:723-33. [PMID: 25302831 DOI: 10.1148/radiol.14132960] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE To evaluate the diagnostic performance of magnetic resonance (MR) imaging with MR cholangiopancreatography (MRCP) in determining the malignant potential and surgical resectability of pancreas intraductal papillary mucinous neoplasms (IPMNs). MATERIALS AND METHODS Institutional review board approval was obtained, and the requirement for informed consent was waived. Ninety-eight patients with pathologically proved pancreas IPMNs who underwent MR imaging with MRCP comprised the study population. MR images were analyzed for findings suggestive of high-risk stigmata or worrisome features, as proposed by the international consensus guidelines 2012. Interobserver agreement between two experienced observers (observers 1 and 2) and one inexperienced observer (observer 3) was assessed. Diagnostic performance of MR imaging in the evaluation of the malignant potential and surgical resectability of IPMNs was analyzed in these three observers by using receiver operating curve analysis. RESULTS MR imaging with MRCP showed sensitivity of 83% (35/42), 79% (33/42), and 90% (38/42); specificity of 80% (41/51), 51% (26/51), and 24% (12/51); and accuracy of 82% (76/93), 63% (59/93), and 54% (50/93) for observers 1, 2, and 3, respectively, in the evaluation of the malignant potential of pancreas IPMNs when at least one worrisome feature was present. Interobserver agreement in the detection of intramural nodules (κ = 0.349-0.574), enhanced solid components (κ = 0.318-0.574), and measurement of main pancreatic duct diameter (intraclass correlation coefficient = 0.9477) was fair to high. The respective sensitivity, specificity, and accuracy in determination of surgical resectability were 95% (81/85), 99% (84/85), and 88% (75/85); 69% (9/13), 69% (9/13), and 54% (7/13); and 92% (90/98), 95% (93/98), and 84% (82/98) for observers 1, 2, and 3. CONCLUSION MR imaging with MRCP is a useful modality in the evaluation of the malignant potential and resectability of IPMNs, with high sensitivity and moderate specificity in the experienced radiologists but relatively low specificity in the inexperienced radiology trainee.
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Affiliation(s)
- Seong Ho Kim
- From the Department of Radiology (S.H.K., J.M.L., J.H.B., J.H.K., J.K.H., B.I.C.) and Institute of Radiation Medicine (J.M.L., J.H.K., J.K.H., B.I.C.), Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Republic of Korea; and Department of Radiology, Research Institute and Hospital of National Cancer Center, Goyang, Republic of Korea (E.S.L.)
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21
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Abstract
Determining the etiology of a solid pancreatic lesion is a critical first step toward developing an appropriate treatment plan for patients with a benign or malignant pancreatic mass. Technological advances in cross-sectional and endoscopic imaging modalities offer pancreatic imaging options with degrees of resolution that were not available even 15-20 years ago. In most cases, the nature of a solid pancreatic mass can be determined using computerized tomography, magnetic resonance imaging, and endoscopic ultrasound with fine-needle aspiration. Knowledge about the basics of these modalities, as well as their strengths and limitations, plays an important role in understanding how patients with solid pancreatic masses should be evaluated.
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22
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Zakharova OP, Karmazanovsky GG, Egorov VI. Pancreatic adenocarcinoma: Outstanding problems. World J Gastrointest Surg 2012; 4:104-13. [PMID: 22655124 PMCID: PMC3364335 DOI: 10.4240/wjgs.v4.i5.104] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 05/10/2012] [Accepted: 05/18/2012] [Indexed: 02/06/2023] Open
Abstract
Pancreatic adenocarcinoma remains the fourth leading cause of cancer-related death and is one of the most aggressive malignant tumors with an overall 5-year survival rate of less than 4%. Surgical resection remains the only potentially curative treatment but is only possible for 15%-20% of patients with pancreatic adenocarcinoma. About 40% of patients have locally advanced nonresectable disease. In the past, determination of pancreatic cancer resectability was made at surgical exploration. The development of modern imaging techniques has allowed preoperative staging of patients. Institutions disagree about the criteria used to classify patients. Vascular invasion in pancreatic cancers plays a very important role in determining treatment and prognosis. There is no evidence-based consensus on the optimal preoperative imaging assessment of patients with suspected pancreatic cancer and a unified definition of borderline resectable pancreatic cancer is also lacking. Thus, there is much room for improvement in all aspects of treatment for pancreatic cancer. Multi-detector computed tomography has been widely accepted as the imaging technique of choice for diagnosing and staging pancreatic cancer. With improved surgical techniques and advanced perioperative management, vascular resection and reconstruction are performed more frequently; patients thought once to be unresectable are undergoing radical surgery. However, when attempting heroic surgery, a realistic approach concerning the patient’s age and health status, probability of recovery after surgery, perioperative morbidity and mortality and life quality after tumor resection is necessary.
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Affiliation(s)
- Olga P Zakharova
- Olga P Zakharova, Grigory G Karmazanovsky, Department of Radiology, Vishnevsky Institute of Surgery, 117997 Moscow, Russia
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23
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Vascular invasion in pancreatic cancer: predictive values for endoscopic ultrasound and computed tomography imaging. Pancreas 2012; 41:636-8. [PMID: 22460727 DOI: 10.1097/mpa.0b013e31823e3632] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES To evaluate the accuracy of endoscopic ultrasound (EUS) to determine vascular invasion in patients with pancreatic cancer. METHODS Data were obtained prospectively from patients with a pancreatic lesion who underwent EUS, computed tomographic (CT) imaging, and surgery from March 2005 to March 2010. RESULTS Fifty patients were included with a mean ± SD age 61 ± 11.5 years; 27 (54%) were women. The sensitivity, specificity, positive predictive value, and negative predictive value for EUS were the following: 61.1 (95% CI, 38.6-79.7), 90.3 (95% CI, 75.1-96.7), 78.6 (95% CI, 52.4-92.4), and 80 (95% CI, 64.1-90), respectively. The area under the curve for EUS and that for CT were 0.80 (95% CI, 0.68-0.92) and 0.74 (95% CI, 0.61-0.86), respectively. The positive predictive value for arterial invasion was 100% (95% CI, 61-100) for EUS and 60% (95% CI, 31.3-83.2) for CT. There were no complications associated with the EUS or the CT. CONCLUSION Endoscopic US is a very good option to detect vascular invasion in patients with pancreatic cancer and is especially sensitive for arterial invasion. When it is available, we recommend that it be performed in addition to CT staging.
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24
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Low G, Panu A, Millo N, Leen E. Multimodality imaging of neoplastic and nonneoplastic solid lesions of the pancreas. Radiographics 2012; 31:993-1015. [PMID: 21768235 DOI: 10.1148/rg.314105731] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Solid lesions of the pancreas represent a heterogeneous group of entities that can be broadly classified as either neoplastic or nonneoplastic. Neoplastic lesions include pancreatic adenocarcinoma, pancreatic neuroendocrine tumor, solid pseudopapillary tumor, pancreatoblastoma, pancreatic lymphoma, metastases to the pancreas, and rare miscellaneous neoplasms. Nonneoplastic lesions include focal pancreatitis, fatty infiltration-replacement, intrapancreatic accessory spleen, congenital anomalies such as prominent pancreatic lobulation and bifid pancreatic tail (pancreatic bifidum), and rare miscellaneous lesions (eg, pancreatic sarcoidosis, Castleman disease of the pancreas). A variety of imaging modalities are available for assessing these solid lesions, including ultrasonography (US), computed tomography (CT), magnetic resonance imaging, endoscopic US, and hybrid nuclear imaging techniques such as single photon emission computed tomography-CT and positron emission tomography-CT, each of which has its own strengths and limitations. Accurate diagnosis can be challenging, and use of a multimodality imaging approach is often helpful in equivocal or complex cases. Knowledge of relevant clinical information and key radiologic features is essential for confident lesion characterization and differentiation.
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Affiliation(s)
- Gavin Low
- Department of Radiology and Diagnostic Imaging, University of Alberta Hospital, Edmonton, AB, Canada.
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25
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Padilla-Thornton AE, Willmann JK, Jeffrey RB. Adenocarcinoma of the uncinate process of the pancreas: MDCT patterns of local invasion and clinical features at presentation. Eur Radiol 2011; 22:1067-74. [DOI: 10.1007/s00330-011-2339-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 10/26/2011] [Accepted: 10/29/2011] [Indexed: 11/25/2022]
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26
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Sun MRM, Brennan DD, Kruskal JB, Kane RA. Intraoperative ultrasonography of the pancreas. Radiographics 2011; 30:1935-53. [PMID: 21057128 DOI: 10.1148/rg.307105051] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Intraoperative ultrasonography (US) of the pancreas is a versatile technique that provides excellent spatial and contrast resolution and real-time imaging capabilities, making it useful for diagnostic imaging as well as for guidance of laparoscopic and open operative procedures. Intraoperative US may be used for applications such as staging and localizing tumors; performing regional metastatic surveys; documenting arterial and venous patency; identifying endocrine tumors; distinguishing pancreatitis from a neoplasm; and guiding biopsy, duct cannulation, and drainage of abscesses or cysts. The scanning approach and technique vary according to the application, with many different equipment and transducer options and sterilization methods available. With increasing clinical demands for intraoperative US, it is essential that radiologists be familiar with its uses and technique. In addition, to properly perform intraoperative US and accurately interpret the images, knowledge of normal and variant pancreatic and vascular anatomy and relevant landmarks is needed. Supplemental material available at http://radiographics.rsna.org/lookup/suppl/doi:10.1148/rg.307105051/-/DC1.
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Affiliation(s)
- Maryellen R M Sun
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, CCW, Boston, MA 02215, USA.
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27
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Abstract
Pancreatic carcinoma is the fourth cause of death from cancer in the United States, with a survival rate at 5 years of less than 5%. About 60% of tumors originate at the head of the pancreas, 15% in the body, 5% in the tail; 20% are diffuse within the pancreas. This article discusses the imaging and staging of pancreatic cancer.
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Affiliation(s)
- G Morana
- Radiological Department, General Hospital Cá Foncello, Treviso, Italy.
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28
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Kaneko OF, Lee DM, Wong J, Kadell BM, Reber HA, Lu DSK, Raman SS. Performance of multidetector computed tomographic angiography in determining surgical resectability of pancreatic head adenocarcinoma. J Comput Assist Tomogr 2010; 34:732-8. [PMID: 20861777 DOI: 10.1097/rct.0b013e3181e5d6f7] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVE To evaluate the performance of multidetector computed tomographic angiography (MDCTA) in assessing the surgical resectability of pancreatic head adenocarcinoma. METHODS With institutional review board approval, radiographic, surgical, and pathological records of 203 consecutive patients with adenocarcinoma of the pancreatic head were analyzed retrospectively. Patients were imaged with MDCT scanners using our institution's CTA pancreatic protocol. Images were compared with surgical outcomes to determine the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of MDCTA in determining resectability. RESULTS Data were analyzed twice, once with equivocal findings on MDCTA assumed as resectable and again with equivocal cases assumed as unresectable. All equivocal cases were ultimately unresectable; when this was assumed, the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were determined to be 100%, 71%, 85%,100% and 89%. Twelve patients deemed resectable by preoperative MDCTA were found to be unresectable on surgical exploration owing to vascular involvement (n = 4), liver metastases (n = 4), and peritoneal involvement (n = 4). CONCLUSIONS Multidetector CT angiography offers accurate and valuable preoperative assessment of surgical resectability of pancreatic ductal adenocarcinoma. Liver and peritoneal metastases and vascular invasion still remain important pitfalls in preoperative evaluation.
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Affiliation(s)
- Osamu F Kaneko
- Department of Radiological Science, University of California-Los Angeles, Los Angeles, CA 90095-7437, USA.
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29
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Complementary roles of CT and endoscopic ultrasound in evaluating a pancreatic mass. AJR Am J Roentgenol 2010; 194:984-92. [PMID: 20308501 DOI: 10.2214/ajr.08.2034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE The objectives of our study were to illustrate normal pancreatic anatomy using endoscopic ultrasound and to show the imaging findings of solid pancreatic masses on endoscopic ultrasound and CT. CONCLUSION CT and endoscopic ultrasound have complementary roles in the diagnosis of solid pancreatic masses.
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30
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Recomendaciones para el diagnóstico, la estadificación y el tratamiento del cáncer de páncreas (parte I). Med Clin (Barc) 2010; 134:643-55. [DOI: 10.1016/j.medcli.2009.12.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 12/04/2009] [Accepted: 12/15/2009] [Indexed: 02/08/2023]
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31
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Abstract
A high-quality pancreatic protocol computed tomography (CT) is the primary imaging modality for diagnosing and staging pancreatic malignancy. The main limitation of CT is the lack of sensitivity for early pancreatic lesions. Endoscopic ultrasound (EUS) provides an excellent complement to CT for both diagnosis and staging of pancreatic cancer, and allows easy access for needle aspiration and tissue diagnosis. Magnetic resonance (MR) can be helpful for evaluating small hepatic nodules or cystic lesions of the pancreas, but in general, the role of MR and positron emission tomography remains limited to special situations when the results of CT and EUS are equivocal.
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32
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Buchs NC, Chilcott M, Poletti PA, Buhler LH, Morel P. Vascular invasion in pancreatic cancer: Imaging modalities, preoperative diagnosis and surgical management. World J Gastroenterol 2010; 16:818-31. [PMID: 20143460 PMCID: PMC2825328 DOI: 10.3748/wjg.v16.i7.818] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer is associated with a poor prognosis, and surgical resection remains the only chance for curative therapy. In the absence of metastatic disease, which would preclude resection, assessment of vascular invasion is an important parameter for determining resectability of pancreatic cancer. A frequent error is to misdiagnose an involved major vessel. Obviously, surgical exploration with pathological examination remains the “gold standard” in terms of evaluation of resectability, especially from the point of view of vascular involvement. However, current imaging modalities have improved and allow detection of vascular invasion with more accuracy. A venous resection in pancreatic cancer is a feasible technique and relatively reliable. Nevertheless, a survival benefit is not achieved by curative resection in patients with pancreatic cancer and vascular invasion. Although the discovery of an arterial invasion during the operation might require an aggressive management, discovery before the operation should be considered as a contraindication. Detection of vascular invasion remains one of the most important challenges in pancreatic surgery. The aim of this article is to provide a complete review of the different imaging modalities in the detection of vascular invasion in pancreatic cancer.
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33
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Wong JC, Raman S. Surgical resectability of pancreatic adenocarcinoma: CTA. ACTA ACUST UNITED AC 2009; 35:471-80. [PMID: 19468791 PMCID: PMC2900587 DOI: 10.1007/s00261-009-9539-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2009] [Accepted: 04/30/2009] [Indexed: 12/17/2022]
Abstract
Imaging studies play an important role in the diagnosis and management of patients with pancreatic adenocarcinoma. Computed tomography (CT) is the most widely available and best validated modality for imaging these patients. Meticulous technique following a well-designed pancreas protocol is essential for maximizing the diagnostic efficacy of CT. After the diagnosis of pancreatic adenocarcinoma is made, the key to management is staging to determine resectability. In practice, staging often entails predicting the presence or absence of vascular invasion by tumor, for which several radiologic grading systems exist. With advances in surgical techniques, the definition of resectability is in evolution, and it is crucial that radiologists have an understanding of the implications of findings that are relevant to the determination of resectability.
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Affiliation(s)
- Jimmie C Wong
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, 10833 Le Conte Ave, BL-428 CHS, Los Angeles, CA 90095-1721, USA.
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Guarise A, Faccioli N, Morana G, Megibow AJ. Chronic Pancreatitis vs Pancreatic Tumors. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/978-3-540-68251-6_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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35
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Lee JK, Kim AY, Kim PN, Lee MG, Ha HK. Prediction of vascular involvement and resectability by multidetector-row CT versus MR imaging with MR angiography in patients who underwent surgery for resection of pancreatic ductal adenocarcinoma. Eur J Radiol 2008; 73:310-6. [PMID: 19070981 DOI: 10.1016/j.ejrad.2008.10.028] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Revised: 08/27/2008] [Accepted: 10/28/2008] [Indexed: 12/18/2022]
Abstract
PURPOSE To compare the diagnostic value of dual-phase multidetector-row CT (MDCT) and MR imaging with dual-phase three-dimensional MR angiography (MRA) in the prediction of vascular involvement and resectability of pancreatic ductal adenocarcinoma. METHODS AND MATERIALS 116 patients with proven pancreatic adenocarcinoma underwent both MDCT and combined MR imaging prior to surgery. Of 116 patients, 56 who underwent surgery were included. Two radiologists independently attempt to assess detectability, vascular involvement and resectability of pancreatic adenocarcinoma on both images. Results were compared with surgical findings and statistical analysis was performed. RESULTS MDCT detected pancreatic mass in 45 of 56 patients (80.3%) and MR imaging in 44 patients (78.6%). In assessment of vascular involvement, sensitivities and specificities of MDCT were 61% and 96% on a vessel-by-vessel basis, respectively. Those of MR imaging were 57% and 98%, respectively. In determining resectability, sensitivities and specificities of MDCT were 90% and 65%, respectively. Those of MR imaging were 90% and 41%, respectively. There was no statistical difference in detecting tumor, assessing vascular involvement and determining resectability between MDCT and MR imaging (p=0.5). CONCLUSION MDCT and MR imaging with MRA demonstrated an equal ability in detection, predicting vascular involvement, and determining resectability for a pancreatic ductal adenocarcinoma.
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Affiliation(s)
- Jeong Kyong Lee
- Department of Radiology, School of Medicine, Ewha Womans University, 911-1 Mok-dong, YangCheon-ku, Seoul 158-710, Republic of Korea
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Staging of pancreatic adenocarcinoma by imaging studies. Clin Gastroenterol Hepatol 2008; 6:1301-8. [PMID: 18948228 DOI: 10.1016/j.cgh.2008.09.014] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2008] [Revised: 09/23/2008] [Accepted: 09/23/2008] [Indexed: 02/07/2023]
Abstract
Imaging studies play a crucial role in the diagnosis and management of patients with pancreatic adenocarcinoma. Computed tomography (CT) is the most widely available and best-validated modality for imaging patients with pancreatic adenocarcinoma. To maximize the diagnostic efficacy of CT, use of a pancreas protocol is mandatory. The sensitivity of CT for diagnosis of pancreatic adenocarcinoma (89%-97%) and its positive predictive value for predicting unresectability (89%-100%) are high. The positive predictive value of CT for predicting resectability (45%-79%) is low because the diagnostic criteria for diagnosing vascular invasion by tumor favors specificity over sensitivity to avoid denying surgery to patients with potentially resectable tumor. Furthermore, the sensitivity of CT for small hepatic and peritoneal metastases is limited. Magnetic resonance imaging has not been shown to perform better than CT for the diagnosis and staging of pancreatic adenocarcinoma, but can be helpful as an adjunct to CT, particularly for evaluation of small hepatic lesions that cannot be fully characterized by CT. Ultrasound is often the first study obtained in patients with obstructive jaundice or unexplained abdominal pain, but its utility for diagnosis and staging of patients with pancreatic adenocarcinoma is limited. Positron emission tomography/CT combines the functional information provided by positron emission tomography with the anatomic information provided by CT and is a promising modality for imaging of patients with pancreatic adenocarcinoma, but its utility has not been established. Endoscopic ultrasound is generally considered superior to CT for the diagnosis and local staging of pancreatic cancer, but is limited by availability and inability to assess for distant metastases.
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Springett GM, Hoffe SE. Borderline resectable pancreatic cancer: on the edge of survival. Cancer Control 2008; 15:295-307. [PMID: 18813197 DOI: 10.1177/107327480801500404] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Patients with borderline resectable pancreatic cancer are at high risk of having positive surgical margins due to involvement of the tumor with adjacent vasculature. This article reviews the management of this subset of pancreatic cancer patients. METHODS The authors review the current definitions of borderline resectable pancreatic cancer and how it is diagnosed and staged. The history, current approaches, and future directions in neoadjuvant therapy for borderline resectable pancreatic cancer are also reviewed with emphasis on various chemotherapy regimens that have been used. The application of intensity-modulated radiation therapy and image-guided radiation therapy that accounts for respiratory motion to targeting the gross tumor volume in the pancreas are discussed, and the promise of integrating targeted therapies in neoadjuvant treatment programs is highlighted. RESULTS The use of neoadjuvant treatment programs that employ gemcitabine-based chemotherapy regimens followed by chemoradiation increases the likelihood of subsequent margin-negative resection in borderline resectable pancreatic cancer. CONCLUSIONS There has been progress in the imaging, staging, surgical technique, and the use of chemotherapy and chemoradiotherapy in the management of borderline resectable pancreatic cancer. Patients can benefit from multidisciplinary management at high-volume pancreatic cancer treatment centers.
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Affiliation(s)
- Gregory M Springett
- Gastrointestinal Tumor Program, H Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA.
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Tamm EP, Bhosale PR, Lee JH. Pancreatic ductal adenocarcinoma: ultrasound, computed tomography, and magnetic resonance imaging features. Semin Ultrasound CT MR 2008; 28:330-8. [PMID: 17970550 DOI: 10.1053/j.sult.2007.06.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The technologies of computed tomography, magnetic resonance, and ultrasound (transabdominal and endoscopic) have advanced considerably in recent years, having a major impact on the management of pancreatic cancer, guiding surgery for the potential of cure, and avoiding needless surgery in those patients who are unresectable. Knowledge of how these modalities should be utilized, how they can be optimized, and the appearance of ductal adenocarcinoma on each modality are crucial for them to be used effectively and accurately.
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Affiliation(s)
- Eric P Tamm
- Department of Diagnostic Radiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA.
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A clinical algorithm for the assessment of pancreatic lesions: utilization of 16- and 64-section multidetector CT and endoscopic ultrasound. Clin Radiol 2007; 62:1142-53. [DOI: 10.1016/j.crad.2007.05.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 05/01/2007] [Accepted: 05/22/2007] [Indexed: 02/06/2023]
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40
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Brennan DDD, Zamboni GA, Raptopoulos VD, Kruskal JB. Comprehensive Preoperative Assessment of Pancreatic Adenocarcinoma with 64-Section Volumetric CT. Radiographics 2007; 27:1653-66. [DOI: 10.1148/rg.276075034] [Citation(s) in RCA: 125] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Zamboni GA, Kruskal JB, Vollmer CM, Baptista J, Callery MP, Raptopoulos VD. Pancreatic adenocarcinoma: value of multidetector CT angiography in preoperative evaluation. Radiology 2007; 245:770-8. [PMID: 17951353 DOI: 10.1148/radiol.2453061795] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE To retrospectively assess the sensitivity and specificity of multidetector computed tomographic (CT) angiography in the preoperative evaluation of pancreatic adenocarcinoma by using surgical findings as the reference standard. MATERIALS AND METHODS The institutional review board approved this HIPAA-compliant study; informed consent was waived. We reviewed CT reports, surgical notes, and pathology reports from 114 patients with pancreatic or distal cholangiocarcinoma who underwent multidetector CT angiography and surgery at our institution between March 2003 and March 2006. When CT findings and surgical reports were discordant, radiologists experienced in pancreatic imaging retrospectively reviewed images for lesion resectability; four-, eight-, 16-, and 64-row CT scanners were used in 54, 19, 25, and 16 patients, respectively. Collimation of 1.25 mm was used for four- and eight-row CT and 0.5 or 0.625 mm for 16- and 64-row CT. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for resectability were calculated for initial clinical interpretation and blinded retrospective review. RESULTS Eighty-eight patients had resectable lesions according to CT angiographic criteria (group A: 46 women, 42 men; mean age, 67 years; age range, 39-85 years): resection was aborted in 10 patients (11%). Twenty-six patients underwent surgery despite lesion unresectability assessed according to CT angiographic criteria (group B: 16 women, 10 men; mean age, 62 years; age range, 33-83 years); all lesions were confirmed as unresectable. The initial clinical interpretation of CT angiographic scans in all 114 patients had 100% sensitivity in the detection of resectability, 72% specificity, 89% PPV, and 100% NPV. These parameters did not appear to vary among different types of scanner. With the blinded retrospective evaluation by experienced readers, specificity increased to 94% and PPV to 98%, with no difference in sensitivity and NPV. CONCLUSION Multidetector CT angiography is an effective preoperative tool that reduces the number of aborted pancreatic resections; there is no evidence from this retrospective study suggesting varying results from the various generations of multidetector CT scanners used.
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Affiliation(s)
- Giulia A Zamboni
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, USA
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Vullierme MP, Giraud-Cohen M, Hammel P, Sauvanet A, Couvelard A, O'Toole D, Levy P, Ruszniewski P, Vilgrain V. Malignant intraductal papillary mucinous neoplasm of the pancreas: in situ versus invasive carcinoma surgical resectability. Radiology 2007; 245:483-90. [PMID: 17848678 DOI: 10.1148/radiol.2451060951] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE To retrospectively evaluate computed tomographic (CT) findings in patients with in situ and invasive malignant intraductal papillary mucinous neoplasms (IPMNs) of the pancreas and to evaluate the accuracy for surgical resectability, with surgery and pathologic analysis as the reference standards. MATERIALS AND METHODS Institutional review board approval was obtained, and the informed consent requirement was waived. Forty-six patients with malignant IPMN proved at pathologic examination of the surgically resected specimen (n = 44) or laparotomy (n = 2) underwent surgery after multidetector CT was performed. CT findings were retrospectively evaluated to determine if a pancreatic malignant IPMN tumor was present; to make this determination, CT criteria were used to differentiate in situ from invasive tumors and signs of unresectability (liver metastasis, vascular CT pattern of encasement, or regional lymph node metastasis). The extent of the vascular CT pattern of encasement was recorded for each patient (no obliteration of the fat plane, obliteration of the fat plane of <50%, or obliteration of the fat plane of > or =50%). Statistical analysis was performed with the chi(2) and Student t tests. RESULTS CT revealed a mural nodule in the pancreatic duct wall in 14 patients with in situ carcinoma and one patient with invasive carcinoma (P < .003). CT revealed an infiltrative pancreatic mass in 17 patients with invasive carcinoma and two patients with in situ carcinoma (P < .02). Of the mural nodules, 93% were seen in patients with in situ carcinoma, whereas 90% of infiltrative pancreatic masses were observed in patients with invasive carcinomas. The positive predictive value of CT for determining resectability was 100%, and the overall accuracy of CT for determining resectability and unresectability was 74%. The positive predictive value of CT for determining unresectability was 17%, mainly owing to overestimation of arterial invasion. CONCLUSION CT is helpful in the differentiation of in situ and invasive IPMN. Classic vascular invasion criteria lead to the overestimation of surgical tumor unresectability in patients with malignant IPMN.
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Brennan DD, Zamboni G, Sosna J, Callery MP, Vollmer CMV, Raptopoulos VD, Kruskal JB. Virtual Whipple: Preoperative Surgical Planning with Volume-Rendered MDCT Images to Identify Arterial Variants Relevant to the Whipple Procedure. AJR Am J Roentgenol 2007; 188:W451-5. [PMID: 17449742 DOI: 10.2214/ajr.06.0925] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE The purposes of this study were to combine a thorough understanding of the technical aspects of the Whipple procedure with advanced rendering techniques by introducing a virtual Whipple procedure and to evaluate the utility of this new rendering technique in prediction of the arterial variants that cross the anticipated surgical resection plane. CONCLUSION The virtual Whipple is a novel technique that follows the complex surgical steps in a Whipple procedure. Three-dimensional reconstructed angiographic images are used to identify arterial variants for the surgeon as part of the preoperative radiologic assessment of pancreatic and ampullary tumors.
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Affiliation(s)
- Darren D Brennan
- Department of Radiology, Beth Israel Deaconess Medical Center, 1 Deaconess Rd., Boston, MA 02215, USA
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Ayuso C, Sánchez M, Ayuso JR, de Caralt TM, de Juan C. Diagnóstico y estadificación del carcinoma de páncreas (II). RADIOLOGIA 2006; 48:283-94. [PMID: 17168237 DOI: 10.1016/s0033-8338(06)75137-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- C Ayuso
- Servicio de Radiodiagnóstico, Hospital Clinic, Barcelona, España.
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Li H, Zeng MS, Zhou KR, Jin DY, Lou WH. Pancreatic adenocarcinoma: signs of vascular invasion determined by multi-detector row CT. Br J Radiol 2006; 79:880-7. [PMID: 16822803 DOI: 10.1259/bjr/19684199] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The purpose of this study was to analyse multi-detector row CT (MDCT) signs of peripancreatic arterial and venous invasion in pancreatic carcinoma. Among 101 patients with pancreatic carcinoma examined by MDCT, 54 candidates for surgery were pre-operatively evaluated for vascular invasion based on MDCT signs. The peripancreatic major vessels (including superior mesenteric artery, coeliac artery, common hepatic artery, superior mesenteric vein and portal vein) were examined carefully by surgeons during the operation. At surgical exploration, 78 of 224 vessels were invaded by tumour. The invaded peripancreatic major arteries (n = 29) and veins (n = 49) presented different MDCT signs: 43% of invaded veins (18/42, except for 7 occluded veins) were surrounded by tumour less than 50% of the vessel circumference compared with 97% (28/29) of the invaded arteries, which were surrounded by tumour more than 50% of the vessel circumference or were embedded in tumour (p<0.001). 69% (34/49) of the invaded veins had vascular stenosis or obliteration, compared with 41% (12/29) of the invaded arteries (p<0.05). Irregularity of the vein wall, 74% (31/42, except for 7 occluded veins); occurred more often than that of the artery wall, 45% (13/29) (p<0.05). In conclusion, the MDCT signs of peripancreatic arterial and venous invasion have different characteristics, which should be considered in pre-operative evaluation.
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Affiliation(s)
- H Li
- Department of Radiology, The Affiliated First People's Hospital, Shanghai Jiao Tong University, 85 Wujin Road, 200080, Shanghai, P R China
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Abstract
The management of children with a mass in the head of the pancreas is not well defined. The medical records of 3 children with obstructive jaundice because of a mass in the head of the pancreas over a 4-year period were reviewed retrospectively. Abdominal ultrasonography and computed tomography showed intrahepatic and extrahepatic ductal dilatation and a pancreatic mass. Intraoperative frozen section revealed no evidence of malignancy. These patients were separately managed by pylorus-preserving pancreaticoduodenectomy, cholecystectomy and Roux-en-Y choledochojejunostomy, common duct exploration, and T-tube drainage. The final pathology of the pancreatic head mass in all cases demonstrated chronic pancreatitis. Follow-up at an average of 7 months postoperatively showed no recurrence of obstructive jaundice. Unlike adults with a mass in the head of the pancreas, it is recommended that children with similar presentation should undergo biopsy and biliary diversion rather than resection as the primary therapy. Adults presenting with similar radiologic and clinical features would be treated by a pancreaticoduodenectomy in the absence of histologic evidence of malignancy. This series would suggest histologic conformation should be obtained before radical surgery in children.
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Affiliation(s)
- Jinyoung Park
- Department of Pediatric Surgery, School of Medicine, Kyungpook National University, Taegu, Korea
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Abstract
Magnetic resonance angiography (MRA) has evolved over the past years from an experimental imaging modality to a technique that is now widely applied in clinical practice. This article reviews the fundamentals of the different magnetic resonance angiographic techniques and how they can be applied for abdominal and peripheral arterial imaging. Currently, contrast-enhanced magnetic resonance angiography (CE-MRA), whereby a luminogram is obtained during initial arterial passage of contrast material, is the most widely used technique. With current hardware and software, high-spatial resolution images of the abdominal aorta and proximal visceral branches can be obtained that are equivalent to intra-arterial digital subtraction angiography (IA-DSA). High-quality imaging of the renal arteries demands isotropic voxels and reformations orthogonal to the vessel axis for evaluation. Contrast-enhanced magnetic resonance angiography of the peripheral vascular tree is now a highly accurate technique and has replaced diagnostic intra-arterial digital subtraction angiography and duplex ultrasonography in many hospitals.
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Affiliation(s)
- Tim Leiner
- Maastricht University Hospital, Department of Radiology, Maastricht, The Netherlands.
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Abstract
CT is the primary imaging modality of the pancreas. This article reviews the multidector CT technique and its current status in the diagnosis of various pancreatic diseases. Special emphasis is given to the impact of multidetector CT and postprocessing imaging techniques on the staging of pancreatic adenocarcinoma.
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Affiliation(s)
- Raj Mohan Paspulati
- Department of Radiology, University Hospitals of Cleveland, Case Western Reserve University, Cleveland, OH 44106-5056, USA.
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Karmazanovsky G, Fedorov V, Kubyshkin V, Kotchatkov A. Pancreatic head cancer: accuracy of CT in determination of resectability. ACTA ACUST UNITED AC 2005; 30:488-500. [PMID: 15759205 DOI: 10.1007/s00261-004-0279-z] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Pancreatic cancer is a devastating disease whose early detection remains difficult. There is no 100% reliable imaging test to diagnose and stage pancreatic cancer. We assessed the surgical value of contrast-enhanced spiral computed tomography (CT) in predicting the resectability and survival rates of patients who had pancreatic head cancer. METHODS Eighty-nine patients who had pancreatic head cancer were investigated with spiral CT. Based on the preoperative CT results, we assigned patients to one of three CT groups based on resectability. RESULTS A correlation between classification of CT resectability and intraoperative finding was found in 83% of patients. The sensitivity, specificity, negative predictive value, positive predictive value, and accuracy of spiral CT in identifying predictive unresectability were 79%, 82%, 91%, 62%, and 81%, respectively. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of CT in diagnosis of vascular invasion were 94%, 84.2%, 94%, 84%, and 91.3%, respectively. CONCLUSION The use of CT in the evaluation of pancreatic tumors provides valuable preoperative assessment of surgical resectability and should be performed for clinical examination. Classifying patients by tumor resectability on CT helps to estimate more precisely the tumor stage and to prognosticate survival rates of these patients.
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Affiliation(s)
- G Karmazanovsky
- Radiology Department, A. V. Vishnevsky Institute of Surgery RAMSc, Bol. Serpukhovskaya Street, 27, Moscow 115093, Russia.
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Bipat S, Phoa SSKS, van Delden OM, Bossuyt PMM, Gouma DJ, Laméris JS, Stoker J. Ultrasonography, computed tomography and magnetic resonance imaging for diagnosis and determining resectability of pancreatic adenocarcinoma: a meta-analysis. J Comput Assist Tomogr 2005; 29:438-45. [PMID: 16012297 DOI: 10.1097/01.rct.0000164513.23407.b3] [Citation(s) in RCA: 157] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To compare ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) in the diagnosis and determination of resectability of pancreatic adenocarcinoma. METHODS Articles reporting US, CT, or MRI data of patients with known or suspected pancreatic adenocarcinoma and at least 20 patients verified with histopathology, surgical findings, or follow-up were included. A bivariate random effects approach was used to calculate sensitivity and specificity for diagnosis and resectability of pancreatic adenocarcinoma. RESULTS Sixty-eight articles fulfilled all inclusion criteria. For diagnosis, sensitivities of helical CT, conventional CT, MRI, and US were 91%, 86%, 84%, and 76% and specificities were 85%, 79%, 82%, and 75% respectively. Sensitivities for MRI and US were significantly lower compared with helical CT (P = 0.04 and P = 0.0001). For determining resectability, sensitivities of helical CT, conventional CT, MRI, and US were 81%, 82%, 82, and 83% and specificities were 82%, 76%, 78%, and 63% respectively. Specificity of US was significantly lower compared with helical CT (P = 0.011). CONCLUSIONS Helical CT is preferable as an imaging modality for the diagnosis and determination of resectability of pancreatic adenocarcinoma.
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Affiliation(s)
- Shandra Bipat
- Department of Radiology, Academic Medical Center, 1105 AZ Amsterdam, The Netherlands.
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