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Wood LD, Adsay NV, Basturk O, Brosens LAA, Fukushima N, Hong SM, Kim SJ, Lee JW, Luchini C, Noë M, Pitman MB, Scarpa A, Singhi AD, Tanaka M, Furukawa T. Systematic review of challenging issues in pathology of intraductal papillary mucinous neoplasms. Pancreatology 2023; 23:878-891. [PMID: 37604731 DOI: 10.1016/j.pan.2023.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 08/03/2023] [Accepted: 08/08/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND Intraductal papillary mucinous neoplasms (IPMNs) are a cystic precursor to pancreatic cancer. IPMNs deemed clinically to be at high-risk for malignant progression are frequently treated with surgical resection, and pathological examination of the pancreatectomy specimen is a key component of the clinical care of IPMN patients. METHODS Systematic literature reviews were conducted around eight topics of clinical relevance in the examination of pathological specimens in patients undergoing resection of IPMN. RESULTS This review provides updated perspectives on morphological subtyping of IPMNs, classification of intraductal oncocytic papillary neoplasms, nomenclature for high-grade dysplasia, assessment of T stage, distinction of carcinoma associated or concomitant with IPMN, role of molecular assessment of IPMN tissue, role of intraoperative assessment by frozen section, and preoperative evaluation of cyst fluid cytology. CONCLUSIONS This analysis provides the foundation for data-driven approaches to several challenging issues in the pathology of IPMNs.
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Affiliation(s)
- Laura D Wood
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - N Volkan Adsay
- Department of Pathology, Koç University Hospital and Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
| | - Olca Basturk
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lodewijk A A Brosens
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Noriyoshi Fukushima
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Seung-Mo Hong
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sung-Joo Kim
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae W Lee
- Department of Pathology, Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Claudio Luchini
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, 37134, Verona, Italy; ARC-Net Research Center, University of Verona, 37134, Verona, Italy
| | - Michaël Noë
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Martha B Pitman
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Aldo Scarpa
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, 37134, Verona, Italy; ARC-Net Research Center, University of Verona, 37134, Verona, Italy
| | - Aatur D Singhi
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Mariko Tanaka
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toru Furukawa
- Department of Investigative Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
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2
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Nikiforova MN, Wald AI, Spagnolo DM, Melan MA, Grupillo M, Lai YT, Brand RE, O’Broin-Lennon AM, McGrath K, Park WG, Pfau PR, Polanco PM, Kubiliun N, DeWitt J, Easler JJ, Dam A, Mok SR, Wallace MB, Kumbhari V, Boone BA, Marsh W, Thakkar S, Fairley KJ, Afghani E, Bhat Y, Ramrakhiani S, Nasr J, Skef W, Thiruvengadam NR, Khalid A, Fasanella K, Chennat J, Das R, Singh H, Sarkaria S, Slivka A, Gabbert C, Sawas T, Tielleman T, Vanderveldt HD, Tavakkoli A, Smith LM, Smith K, Bell PD, Hruban RH, Paniccia A, Zureikat A, Lee KK, Ongchin M, Zeh H, Minter R, He J, Nikiforov YE, Singhi AD. A Combined DNA/RNA-based Next-Generation Sequencing Platform to Improve the Classification of Pancreatic Cysts and Early Detection of Pancreatic Cancer Arising From Pancreatic Cysts. Ann Surg 2023; 278:e789-e797. [PMID: 37212422 PMCID: PMC10481930 DOI: 10.1097/sla.0000000000005904] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
OBJECTIVE We report the development and validation of a combined DNA/RNA next-generation sequencing (NGS) platform to improve the evaluation of pancreatic cysts. BACKGROUND AND AIMS Despite a multidisciplinary approach, pancreatic cyst classification, such as a cystic precursor neoplasm, and the detection of high-grade dysplasia and early adenocarcinoma (advanced neoplasia) can be challenging. NGS of preoperative pancreatic cyst fluid improves the clinical evaluation of pancreatic cysts, but the recent identification of novel genomic alterations necessitates the creation of a comprehensive panel and the development of a genomic classifier to integrate the complex molecular results. METHODS An updated and unique 74-gene DNA/RNA-targeted NGS panel (PancreaSeq Genomic Classifier) was created to evaluate 5 classes of genomic alterations to include gene mutations (e.g., KRAS, GNAS, etc.), gene fusions and gene expression. Further, CEA mRNA ( CEACAM5 ) was integrated into the assay using RT-qPCR. Separate multi-institutional cohorts for training (n=108) and validation (n=77) were tested, and diagnostic performance was compared to clinical, imaging, cytopathologic, and guideline data. RESULTS Upon creation of a genomic classifier system, PancreaSeq GC yielded a 95% sensitivity and 100% specificity for a cystic precursor neoplasm, and the sensitivity and specificity for advanced neoplasia were 82% and 100%, respectively. Associated symptoms, cyst size, duct dilatation, a mural nodule, increasing cyst size, and malignant cytopathology had lower sensitivities (41-59%) and lower specificities (56-96%) for advanced neoplasia. This test also increased the sensitivity of current pancreatic cyst guidelines (IAP/Fukuoka and AGA) by >10% and maintained their inherent specificity. CONCLUSIONS PancreaSeq GC was not only accurate in predicting pancreatic cyst type and advanced neoplasia but also improved the sensitivity of current pancreatic cyst guidelines.
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Affiliation(s)
- Marina N. Nikiforova
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Abigail I. Wald
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Daniel M. Spagnolo
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Melissa A. Melan
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Maria Grupillo
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Yi-Tak Lai
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Randall E. Brand
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Anne Marie O’Broin-Lennon
- The Sol Goldman Pancreatic Cancer Research Center, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Kevin McGrath
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Walter G. Park
- Department of Medicine, Stanford University, Stanford, CA
| | - Patrick R. Pfau
- Department of Medicine, University of Wisconsin, Madison, WI
| | - Patricio M. Polanco
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX
| | - Nisa Kubiliun
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - John DeWitt
- Department of Gastroenterology and Hepatology, Indiana University Health Medical Center, Indianapolis, IN
| | - Jeffrey J. Easler
- Department of Gastroenterology and Hepatology, Indiana University Health Medical Center, Indianapolis, IN
| | - Aamir Dam
- Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, FL
| | - Shaffer R. Mok
- Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, FL
| | - Michael B. Wallace
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Jacksonville, FL
- Sheikh Shakhbout Medical City, Abu Dhabi, UAE
| | - Vivek Kumbhari
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Jacksonville, FL
| | - Brian A. Boone
- Department of Surgery, West Virginia University Health Sciences Center, Morgantown, WV
| | - Wallis Marsh
- Department of Surgery, West Virginia University Health Sciences Center, Morgantown, WV
| | - Shyam Thakkar
- Department of Medicine, Section of Gastroenterology & Hepatology, West Virginia University Health Sciences Center, Morgantown, WV
| | - Kimberly J. Fairley
- Department of Medicine, Section of Gastroenterology & Hepatology, West Virginia University Health Sciences Center, Morgantown, WV
| | - Elham Afghani
- The Sol Goldman Pancreatic Cancer Research Center, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Yasser Bhat
- Department of Gastroenterology, Palo Alto Medical Foundation (PAMF), Mountain View, CA
| | - Sanjay Ramrakhiani
- Department of Gastroenterology, Palo Alto Medical Foundation (PAMF), Mountain View, CA
| | - John Nasr
- Department of Medicine, Wheeling Hospital, West Virginia University Health Sciences Center, Morgantown, WV
| | - Wasseem Skef
- Division of Gastroenterology and Hepatology, Department of Medicine, Loma Linda University Medical Center, Loma Linda, CA
| | - Nikhil R. Thiruvengadam
- Division of Gastroenterology and Hepatology, Department of Medicine, Loma Linda University Medical Center, Loma Linda, CA
| | - Asif Khalid
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Kenneth Fasanella
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Jennifer Chennat
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Rohit Das
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Harkirat Singh
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Savreet Sarkaria
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Adam Slivka
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Charles Gabbert
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Tarek Sawas
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Thomas Tielleman
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | | | - Anna Tavakkoli
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Lynette M. Smith
- Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE
| | - Katelyn Smith
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Phoenix D. Bell
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Ralph H. Hruban
- The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Alessandro Paniccia
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Amer Zureikat
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Kenneth K. Lee
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Melanie Ongchin
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Herbert Zeh
- Department of Clinical Sciences, Surgery, University of Texas Southwestern, Dallas, TX
| | - Rebecca Minter
- Department of Surgery, University of Wisconsin, Madison, WI
| | - Jin He
- The Sol Goldman Pancreatic Cancer Research Center, Department of Surgery, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Yuri E. Nikiforov
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Aatur D. Singhi
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
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Mohapatra S, Krishna SG, Pannala R. Pancreatic Cystic Neoplasms: Translating Guidelines into Clinical Practice. Diagnostics (Basel) 2023; 13:diagnostics13040749. [PMID: 36832238 PMCID: PMC9955807 DOI: 10.3390/diagnostics13040749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 02/13/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
A combination of several factors, including the increasing use of cross-sectional imaging and an aging population, has led to pancreatic cystic lesions (PCLs) becoming the most detected incidental pancreatic lesions. Accurate diagnosis and risk stratification of PCLs is challenging. In the last decade, several evidence-based guidelines have been published addressing the diagnosis and management of PCLs. However, these guidelines cover different subsets of patients with PCLs and offer varying recommendations regarding diagnostic assessment, surveillance, and surgical resection. Further, recent studies comparing the accuracy of various guidelines have reported significant variations in the rate of missed cancer versus unnecessary surgical resections. In clinical practice, it is challenging to decide which guideline to follow specifically. This article reviews the varying recommendations of the major guidelines and results of comparative studies, provides an overview of newer modalities not included in the guidelines, and offers perspectives on translating the guidelines into clinical practice.
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Affiliation(s)
- Sonmoon Mohapatra
- Department of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Somashekar G. Krishna
- Department of Gastroenterology and Hepatology and Nutrition, The Ohio State Wexner Medical Center, Columbus, OH 43210, USA
| | - Rahul Pannala
- Department of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, AZ 85259, USA
- Correspondence: ; Tel.: +1-480-301-4755
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4
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Singh RR, Gopakumar H, Sharma NR. Diagnosis and Management of Pancreatic Cysts: A Comprehensive Review of the Literature. Diagnostics (Basel) 2023; 13:diagnostics13030550. [PMID: 36766654 PMCID: PMC9914101 DOI: 10.3390/diagnostics13030550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
The prevalence of pancreatic cysts has been rising due to the widespread use of cross-sectional imaging (CT scan and MRI) of the abdomen. While most pancreatic cysts are benign and do not require treatment or surveillance, a significant minority are premalignant and rarely malignant. The risk stratification of these lesions is not straightforward, and individual risk assessment, cyst size, distribution, and alarming morphologic features (when present) can guide the next steps in management. Neoplastic pancreatic cysts are mucinous or non-mucinous. Endoscopic ultrasound with fine-needle aspiration is often required to classify pancreatic cysts into mucinous and non-mucinous cysts and to assess the malignant potential. Advances in endoscopic techniques (confocal laser endomicroscopy, microforceps biopsy) can provide a definitive diagnosis of pancreatic cysts in some cases; however, the use of these techniques involves a higher risk of adverse events.
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Affiliation(s)
- Ritu R. Singh
- Parkview Cancer Institute (PCI), Parkview Regional Medical Center, Fort Wayne, IN 46845, USA
- Department of Medicine, Indiana University School of Medicine, Fort Wayne, IN 46805, USA
| | - Harishankar Gopakumar
- Division of Gastroenterology and Hepatology, University of Illinois College of Medicine, Peoria, IL 61656, USA
| | - Neil R. Sharma
- Parkview Cancer Institute (PCI), Parkview Regional Medical Center, Fort Wayne, IN 46845, USA
- Department of Medicine, Indiana University School of Medicine, Fort Wayne, IN 46805, USA
- Correspondence:
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5
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Comparative Performance of Endoscopic Ultrasound-Based Techniques in Patients With Pancreatic Cystic Lesions: A Network Meta-Analysis. Am J Gastroenterol 2023; 118:243-255. [PMID: 36563321 DOI: 10.14309/ajg.0000000000002088] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 11/02/2022] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Evidence on the comparative diagnostic performance of endoscopic ultrasound (EUS)-based techniques for pancreatic cystic lesions (PCLs) is limited. This network meta-analysis comprehensively compared EUS-based techniques for PCL diagnosis. METHODS A comprehensive literature search was performed for all comparative studies assessing the accuracy of 2 or more modalities for PCL diagnosis. The primary outcome was the diagnostic efficacy for mucinous PCLs. Secondary outcomes were the diagnostic efficacy for malignant PCLs, diagnostic success rate, and adverse event rate. A network meta-analysis was conducted using the ANOVA model to assess the diagnostic accuracy of each index. RESULTS Forty studies comprising 3,641 patients were identified. The network ranking of the superiority index for EUS-guided needle-based confocal laser endomicroscopy (EUS-nCLE) and EUS-guided through-the-needle biopsy (EUS-TTNB) were significantly higher than other techniques for differentiating mucinous PCLs; besides, EUS-TTNB was also the optimal technique in identifying malignant PCLs. The evidence was inadequate for EUS-nCLE diagnosing malignant PCLs and contrast-enhanced harmonic EUS diagnosing both mucinous and malignant PCLs. Glucose showed a high sensitivity but low specificity, and molecular analysis (KRAS, GNAS, and KRAS + GNAS mutations) showed a high specificity but low sensitivity for diagnosing mucinous PCLs. Satisfactory results were not obtained during the evaluation of the efficiency of pancreatic cyst fluid (PCF) biomarkers in detecting malignant PCLs. DISCUSSION For centers with relevant expertise and facilities, EUS-TTNB and EUS-nCLE were better choices for the diagnosis of PCLs. Further studies are urgently required for further improving PCF biomarkers and validating the diagnostic performance of the index techniques.
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Kuwatani M, Sakamoto N. Pathological and molecular diagnoses of early cancer with bile and pancreatic juice. Dig Endosc 2022; 34:1340-1355. [PMID: 35543333 DOI: 10.1111/den.14348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 05/10/2022] [Indexed: 12/13/2022]
Abstract
The dismal prognosis of pancreaticobiliary malignancies is mainly attributed to the extremely difficult detection of early-stage lesions, including intraepithelial neoplasia. To improve prognosis, several studies on the early detection of cancer have been conducted using bile and pancreatic juices for pathological or molecular analyses. One approach is liquid biopsy that includes information about the tumor, such as circulating tumor cells, circulating tumor DNA, microRNAs, and exosomes released by the tumor. Another approach is proteomics/metabolomics that reflects specific conditions in the tumor. These two approaches lead to artificial intelligence-based multiomics analyses that comprises genomics, proteomics/metabolomics, and transcriptomics. Based on the findings of molecular analysis, pathological analysis using immunohistochemical staining/fluorescence in situ hybridization has also been developed. Moreover, there have been reports of new methods/ingenuities for obtaining appropriate samples for the diagnosis of early-stage cancer. Here we review the knowledge on cutting-edge pathological and molecular analyses of bile and pancreatic juices, introduce some ingenuities in sampling and sample processing to promote effective clinical practice, and provide a basis for future studies.
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Affiliation(s)
- Masaki Kuwatani
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Hokkaido, Japan
| | - Naoya Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Hokkaido, Japan
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7
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Molecular Analysis of Pancreatic Cyst Fluid for the Management of Intraductal Papillary Mucinous Neoplasms. Diagnostics (Basel) 2022; 12:diagnostics12112573. [PMID: 36359417 PMCID: PMC9689264 DOI: 10.3390/diagnostics12112573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/13/2022] [Accepted: 10/19/2022] [Indexed: 12/03/2022] Open
Abstract
Pancreatic cancer is one of the most lethal human cancers. Early detection and diagnosis of precursor lesions for pancreatic malignancy is essential to improve the morbidity and mortality associated with this diagnosis. Of the cystic precursor lesions, branch duct intraductal papillary mucinous neoplasm (IPMN) is the most frequently identified lesion and has a wide range of malignant potential. Currently, Carcinogenic embryonic antigen (CEA) levels in the cyst fluid and cytology are the two most often utilized tools to diagnose these lesions; however, their diagnostic and risk stratification capabilities are somewhat limited. Within the last decade, the use of endoscopic ultrasound-guided fine-needle aspiration has opened the door for molecular analysis of cystic fluid as an option to enhance both the diagnosis and risk stratification of these lesions. The first step is to differentiate branch duct IPMNs from other lesions. KRAS and GNAS alterations have been shown to be accurate markers for this purpose. Following cyst type identification, mutational analysis, telomere fusion, microRNAs, long non-coding RNA, and DNA methylation have been identified as potential targets for stratifying malignant potential using the cystic fluid. In this review, we will examine the various targets of cyst fluid molecular analysis and their utility in the diagnosis and risk stratification of branch duct IPMNs.
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8
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Invited Commentary. J Am Coll Surg 2022; 234:1031-1032. [PMID: 35703793 DOI: 10.1097/xcs.0000000000000200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Assarzadegan N, Babaniamansour S, Shi J. Updates in the Diagnosis of Intraductal Neoplasms of the Pancreas. Front Physiol 2022; 13:856803. [PMID: 35309060 PMCID: PMC8931033 DOI: 10.3389/fphys.2022.856803] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/17/2022] [Indexed: 11/13/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the deadliest types of cancer worldwide. There are many reasons for this dismal prognosis, including the advanced stage at the time of diagnosis and the lack of effective therapeutic approaches. Intraductal papillary mucinous neoplasms (IPMNs) represent detectable and treatable precursor lesions of PDAC. Our understanding of the pathology of IPMNs has evolved over the past few decades, and new advances in diagnostic tools have emerged. The new World Health Organization (WHO) classification scheme now recognizes the previously considered variants of IPMNs, such as intraductal oncocytic papillary neoplasms (IOPNs) and intraductal tubulopapillary neoplasms (ITPNs), as distinct neoplasms. New imaging and molecular diagnostic tests are being developed to recognize these PDAC precursor lesions better. Here, we review the advances in diagnostic tools for IPMNs, IOPNs, and ITPNs, emphasizing the new (5th edition, 2019) WHO classification for pathological diagnosis, molecular markers, new laboratory tests, and imaging tools.
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10
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Nikas IP, Mountzios G, Sydney GI, Ioakim KJ, Won JK, Papageorgis P. Evaluating Pancreatic and Biliary Neoplasms with Small Biopsy-Based Next Generation Sequencing (NGS): Doing More with Less. Cancers (Basel) 2022; 14:cancers14020397. [PMID: 35053560 PMCID: PMC8773813 DOI: 10.3390/cancers14020397] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/05/2022] [Accepted: 01/10/2022] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Pancreatic cancer and cholangiocarcinoma are aggressive diseases mostly diagnosed at an advanced and inoperable stage. This review presents the value of next-generation sequencing (NGS) when performed on small biopsies—including fine-needle aspiration/biopsy samples, brushings, pancreatic juice and bile, and also blood—in the field of pancreatobiliary neoplasia. NGS could guide physicians while evaluating pancreatic solid and cystic lesions or suspicious biliary strictures, performing surveillance in high-risk individuals, or monitoring the disease and assessing prognosis in already diagnosed cancer patients. Evidence suggests that NGS performed on small biopsies is a robust tool for the diagnosis and pre-operative risk stratification of pancreatic and biliary lesions, whereas it also carries significant prognostic and therapeutic value. However, effective standardization of the pre-analytical and analytical assay parameters used for each clinical scenario is needed to fully implement NGS into routine practice and provide more personalized management in patients with suspected or established pancreatobiliary neoplasia. Abstract Pancreatic cancer and cholangiocarcinoma are lethal diseases mainly diagnosed at an inoperable stage. As pancreatobiliary surgical specimens are often unavailable for further molecular testing, this review aimed to highlight the diagnostic, prognostic, and therapeutic impact of next-generation sequencing (NGS) performed on distinct small biopsies, including endoscopic ultrasound fine-needle aspirations and biopsies of pancreatic solid and cystic lesions, biliary duct brushings, and also “liquid biopsies” such as the pancreatic juice, bile, and blood. NGS could clarify indeterminate pancreatic lesions or biliary strictures, for instance by identifying TP53 or SMAD4 mutations indicating high-grade dysplasia or cancer. It could also stratify pancreatic cystic lesions, by distinguishing mucinous from non-mucinous cysts and identifying high-risk cysts that should be excised in surgically fit patients, whereas the combination of cytology, elevated cystic CEA levels and NGS could improve the overall diagnostic accuracy. When NGS is performed on the pancreatic juice, it could stratify high-risk patients under surveillance. On the plasma, it could dynamically monitor the disease course and response to therapy. Notably, the circulating tumor DNA (ctDNA) levels have been associated with staging, grading, and survival. Lastly, NGS has shown potential in identifying potentially actionable molecular alterations. In conclusion, NGS applied on small biopsies could carry significant diagnostic, prognostic, and therapeutic value.
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Affiliation(s)
- Ilias P. Nikas
- School of Medicine, European University Cyprus, Nicosia 2404, Cyprus; (G.I.S.); (K.J.I.)
- Correspondence:
| | - Giannis Mountzios
- Fourth Department of Medical Oncology and Clinical Trials Unit, Henry Dunant Hospital Center, 11526 Athens, Greece;
| | - Guy I. Sydney
- School of Medicine, European University Cyprus, Nicosia 2404, Cyprus; (G.I.S.); (K.J.I.)
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
| | - Kalliopi J. Ioakim
- School of Medicine, European University Cyprus, Nicosia 2404, Cyprus; (G.I.S.); (K.J.I.)
- Department of Internal Medicine, Limassol General Hospital, Limassol 4131, Cyprus
| | - Jae-Kyung Won
- Department of Pathology, Seoul National University Hospital and College of Medicine, Seoul 03080, Korea;
| | - Panagiotis Papageorgis
- Tumor Microenvironment, Metastasis and Experimental Therapeutics Laboratory, Basic and Translational Cancer Research Center, Department of Life Sciences, European University Cyprus, Nicosia 2404, Cyprus;
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11
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Relevance of gene mutations and methylation to the growth of pancreatic intraductal papillary mucinous neoplasms based on pyrosequencing. Sci Rep 2022; 12:419. [PMID: 35013462 PMCID: PMC8748617 DOI: 10.1038/s41598-021-04335-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022] Open
Abstract
We aimed to assess some of the potential genetic pathways for cancer development from non-malignant intraductal papillary mucinous neoplasm (IPMN) by evaluating genetic mutations and methylation. In total, 46 dissected regions in 33 IPMN cases were analyzed and compared between malignant-potential and benign cases, or between malignant-potential and benign tissue dissected regions including low-grade IPMN dissected regions accompanied by malignant-potential regions. Several gene mutations, gene methylations, and proteins were assessed by pyrosequencing and immunohistochemical analysis. RASSF1A methylation was more frequent in malignant-potential dissected regions (p = 0.0329). LINE-1 methylation was inversely correlated with GNAS mutation (r = - 0.3739, p = 0.0105). In cases with malignant-potential dissected regions, GNAS mutation was associated with less frequent perivascular invasion (p = 0.0128), perineural invasion (p = 0.0377), and lymph node metastasis (p = 0.0377) but significantly longer overall survival, compared to malignant-potential cases without GNAS mutation (p = 0.0419). The presence of concordant KRAS and GNAS mutations in the malignant-potential and benign dissected regions were more frequent among branch-duct IPMN cases than among the other types (p = 0.0319). Methylation of RASSF1A, CDKN2A, and LINE-1 and GNAS mutation may be relevant to cancer development, IPMN subtypes, and cancer prognosis.
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Buerlein RCD, Shami VM. Management of pancreatic cysts and guidelines: what the gastroenterologist needs to know. Ther Adv Gastrointest Endosc 2021; 14:26317745211045769. [PMID: 34589706 PMCID: PMC8474323 DOI: 10.1177/26317745211045769] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 08/25/2021] [Indexed: 12/15/2022] Open
Abstract
The prevalence of pancreatic cysts has increased significantly over the last
decade, partly secondary to increased quality and frequency of cross-sectional
imaging. While the majority never progress to cancer, a small number will and
need to be followed. The management of pancreatic cysts can be both confusing
and intimidating due to the multiple guidelines with varying recommendations.
Despite the differences in the specifics of the guidelines, they all agree on
several high-risk features that should get the attention of any clinician when
assessing a pancreatic cyst: presence of a mural nodule or solid component,
dilation of the main pancreatic duct (or presence of main duct intraductal
papillary mucinous neoplasm), pancreatic cyst size ⩾3–4 cm, or positive cytology
on pancreatic cyst fluid aspiration. Other important criteria to consider
include rapid cyst growth (⩾5 mm/year), elevated serum carbohydrate antigen 19-9
levels, new-onset diabetes mellitus, or acute pancreatitis thought to be related
to the cystic lesion.
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Affiliation(s)
| | - Vanessa M Shami
- University of Virginia Digestive Health, 1215 Lee Street, Charlottesville, VA 22903, USA
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Assarzadegan N, Thompson E, Salimian K, Gaida MM, Brosens LAA, Wood L, Ali SZ, Hruban RH. Pathology of intraductal papillary mucinous neoplasms. Langenbecks Arch Surg 2021; 406:2643-2655. [PMID: 34047827 DOI: 10.1007/s00423-021-02201-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/13/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Intraductal papillary mucinous neoplasms (IPMNs) represent a unique opportunity to treat and prevent a curable neoplasm before it has the chance to progress to incurable cancer. This prospect, however, has to be balanced with the real risk of over treating patients with lesions that would, in fact, never progress during the life of the patient. PURPOSE Informed clinical decisions in the treatment of IPMNs are first and foremost based on a deep understanding of the pathology of these lesions. CONCLUSIONS Here we review the pathology of IPMNs, with an emphasis on the clinical relevance of the important features that characterize these lesions.
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Affiliation(s)
- Naziheh Assarzadegan
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA
| | - Elizabeth Thompson
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA
| | - Kevan Salimian
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA
| | - Matthias M Gaida
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
| | - Lodewijk A A Brosens
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Laura Wood
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA.,Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA
| | - Syed Z Ali
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA.,Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA
| | - Ralph H Hruban
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA. .,Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21212, USA.
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