1
|
Thompson ED, Roberts NJ, Wood LD, Eshleman JR, Goggins MG, Kern SE, Klein AP, Hruban RH. The genetics of ductal adenocarcinoma of the pancreas in the year 2020: dramatic progress, but far to go. Mod Pathol 2020; 33:2544-2563. [PMID: 32704031 PMCID: PMC8375585 DOI: 10.1038/s41379-020-0629-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022]
Abstract
The publication of the "Pan-Cancer Atlas" by the Pan-Cancer Analysis of Whole Genomes Consortium, a partnership formed by The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC), provides a wonderful opportunity to reflect on where we stand in our understanding of the genetics of pancreatic cancer, as well as on the opportunities to translate this understanding to patient care. From germline variants that predispose to the development of pancreatic cancer, to somatic mutations that are therapeutically targetable, genetics is now providing hope, where there once was no hope, for those diagnosed with pancreatic cancer.
Collapse
Affiliation(s)
- Elizabeth D Thompson
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Nicholas J Roberts
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Laura D Wood
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - James R Eshleman
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Michael G Goggins
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Medicine, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Scott E Kern
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Alison P Klein
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ralph H Hruban
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| |
Collapse
|
2
|
Kim DU. Does the Cytogenetic Analysis Using Fluorescence In Situ Hybridization Improve the Preoperative Diagnostic Accuracy of Pancreatic Ductal Adenocarcinoma? Gut Liver 2020; 14:397-398. [PMID: 32655017 PMCID: PMC7366143 DOI: 10.5009/gnl20192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Dong Uk Kim
- Department of Gastroenterology & Biomedical Research Institute, Pusan National University Hospital, Pusan National University College of Medicine, Busan, Korea
| |
Collapse
|
3
|
Lim CS, Im K, Lee DS, Kwon W, Kim JR, Han Y, Kim SW, Jang JY. The Implication of Cytogenetic Alterations in Pancreatic Ductal Adenocarcinoma and Intraductal Papillary Mucinous Neoplasm Identified by Fluorescence In Situ Hybridization and Their Potential Diagnostic Utility. Gut Liver 2020; 14:509-520. [PMID: 31533396 PMCID: PMC7366153 DOI: 10.5009/gnl19087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/18/2019] [Accepted: 07/08/2019] [Indexed: 12/29/2022] Open
Abstract
Background/Aims We investigated chromosomal aberrations in patients with pancreatic ductal adenocarcinoma (PDAC) and intraductal papillary mucinous neoplasm (IPMN) by fluorescence in situ hybridization (FISH) to identify cytogenetic changes and molecular markers that may be useful for preoperative diagnosis. Methods Tissue samples from 48 PDAC and 17 IPMN patients were investigated by FISH analysis using probes targeting chromosomes 7q, 17p, 18q, 20q, and 21q and the pericentromeric region of chromosome 18 (CEP18). Results The PDAC samples harbored 17p deletion (95.8%), 18q deletion (83.3%), CEP18 deletion (81.2%), 20q gain (81.2%), 21q deletion (77.1%), and 7q gain (70.8%). The IPMN samples had 17p deletion (94.1%), CEP18 deletion (94.1%), 21q deletion (70.6%), 18q deletion (58.8%), 20q gain (58.8%), and 7q gain (58.8%). A significant difference in CEP18 gain was identified between the PDAC and IPMN groups (p=0.029). Detection of 17p or 18q deletion had the highest diagnostic accuracy (80.0%) for PDAC. Conclusions Chromosomal alterations were frequently identified in both PDAC and IPMN with similar patterns. CEP18 gain and 17p and 18q deletions might be involved in the later stages of PDAC tumorigenesis. Chromosome 17p and 18q deletions might be excellent diagnostic markers.
Collapse
Affiliation(s)
- Chang-Sup Lim
- Department of Surgery, SMG-SNU Boramae Medical Center, Seoul, Korea
| | - Kyongok Im
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Soon Lee
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Wooil Kwon
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Jae Ri Kim
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Youngmin Han
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sun-Whe Kim
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Jin-Young Jang
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| |
Collapse
|
4
|
Kato A, Naitoh I, Miyabe K, Hayashi K, Yoshida M, Hori Y, Natsume M, Jinno N, Asano G, Kato H, Kuno T, Takahashi S, Kataoka H. An Increased Chromosome 7 Copy Number in Endoscopic Bile Duct Biopsy Specimens Is Predictive of a Poor Prognosis in Cholangiocarcinoma. Dig Dis Sci 2018; 63:3376-3381. [PMID: 30206756 DOI: 10.1007/s10620-018-5280-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 09/07/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND The ability of fluorescence in situ hybridization (FISH) assays in endoscopic transpapillary bile duct biopsy specimens to predict the prognosis of cholangiocarcinoma (CCA) has not been elucidated. AIMS We aimed to clarify the association between the results of UroVysion FISH assays and the prognosis of CCA. METHODS We retrospectively reviewed 49 specimens obtained by transpapillary forceps biopsy from consecutive patients with CCA. The copy numbers of chromosomes 3, 7, and 17 were evaluated by FISH assay using UroVysion. We compared the overall survival (OS) of CCA patients with and without increased copy numbers of chromosomes 3, 7, and 17. Furthermore, we evaluated the association between OS and the clinicopathological parameters of CCA patients. RESULTS The OS was significantly shorter in patients with than without an increased chromosome 7 copy number (log-rank p = 0.015; median OS 11.9 vs. 20.7 months). In the univariate analyses, age (p = 0.012), ECOG performance status (p = 0.046), tumor stage (p = 0.046), surgery (p = 0.006), and an increased chromosome 7 copy number (p = 0.017) were significantly associated with OS. The multivariate analysis revealed that an increased chromosome 7 copy number (hazard ratio, 2.46; 95% CI 1.15-5.27; p = 0.021) and advanced clinical stage (hazard ratio, 2.26; 95% CI 1.11-4.63; p = 0.025) were independently predictive of a poor OS. CONCLUSIONS Detection by FISH assay of an increased chromosome 7 copy number in transpapillary forceps biopsy specimens is predictive of a poor prognosis in CCA patients.
Collapse
Affiliation(s)
- Akihisa Kato
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - Katsuyuki Miyabe
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Kazuki Hayashi
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Michihiro Yoshida
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Yasuki Hori
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Makoto Natsume
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Naruomi Jinno
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Go Asano
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Hiroyuki Kato
- Department of Experimental Pathology and Tumor Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Toshiya Kuno
- Department of Experimental Pathology and Tumor Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Satoru Takahashi
- Department of Experimental Pathology and Tumor Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Hiromi Kataoka
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| |
Collapse
|
5
|
Kato A, Naitoh I, Miyabe K, Hayashi K, Kondo H, Yoshida M, Kato H, Kuno T, Takahashi S, Joh T. Differential diagnosis of cholangiocarcinoma and IgG4-related sclerosing cholangitis by fluorescence in situ hybridization using transpapillary forceps biopsy specimens. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2018. [DOI: 10.1002/jhbp.536] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Akihisa Kato
- Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Katsuyuki Miyabe
- Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Kazuki Hayashi
- Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Hiromu Kondo
- Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Michihiro Yoshida
- Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Hiroyuki Kato
- Department of Experimental Pathology and Tumor Biology; Nagoya City University Graduate School of Medical Sciences; 1 Kawasumi Mizuho-cho, Mizuho-ku Nagoya 467-8601 Japan
| | - Toshiya Kuno
- Department of Experimental Pathology and Tumor Biology; Nagoya City University Graduate School of Medical Sciences; 1 Kawasumi Mizuho-cho, Mizuho-ku Nagoya 467-8601 Japan
| | - Satoru Takahashi
- Department of Experimental Pathology and Tumor Biology; Nagoya City University Graduate School of Medical Sciences; 1 Kawasumi Mizuho-cho, Mizuho-ku Nagoya 467-8601 Japan
| | - Takashi Joh
- Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| |
Collapse
|
6
|
Durante S, Vecchiarelli S, Astolfi A, Grassi E, Casadei R, Santini D, Panzacchi R, Ricci C, Serravalle S, Tarantino G, Falconi M, Teti G, Indio V, Pession A, Minni F, Biasco G, Di Marco M. Copy number gain of chromosome 3q is a recurrent event in patients with intraductal papillary mucinous neoplasm (IPMN) associated with disease progression. Oncotarget 2018; 7:74797-74806. [PMID: 27566563 PMCID: PMC5342702 DOI: 10.18632/oncotarget.11501] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 08/10/2016] [Indexed: 12/30/2022] Open
Abstract
Background Intraductal papillary mucinous neoplasm (IPMN) is the most common cystic preneoplastic lesion of pancreatic cancer. We used an approach coupling high resolution cytogenetic analysis (Affymetrix Oncoscan FFPE Array) with clinically-oriented bioinformatic interpretation of data to understand the most relevant alterations of precursor lesions at different stages to identify new diagnostic markers. Results We identified multiple copy number alterations, particularly in lesions with severe dysplasia, with 7 IPMN with low-intermediate dysplasia carrying a nearly normal karyotype and 13 IPMN with complex Karyotype (> 4 alterations), showing high grade dysplasia. A specific gain of chromosome arm 3q was found in IPMN with complex Karyotype (92%). This gain of 3q is particularly interesting for the presence of oncogenes such as PIK3CA, GATA2 and TERC that are part of pathways that deregulate cell growth and promote disease progression. Quantitative PCR and FISH analysis confirmed the data. Further demonstration of the overexpression of the PIK3CA gene supports the identification of this alteration as a possible biomarker in the early identification of patients with IPMN at higher risk for disease progression. Materials and methods High resolution cytogenetic analysis was performed in 20 formalin fixed paraffin embedded samples of IPMN by Oncoscan FFPE assay. Results were validated by qPCR and FISH analysis. Conclusions The identification of these markers at an early stage of disease onset could help to identify patients at risk for cancer progression and new candidates for a more specific targeted therapy.
Collapse
Affiliation(s)
- Sandra Durante
- Giorgio Prodi Cancer Research Centre, University of Bologna, Bologna, Italy
| | - Silvia Vecchiarelli
- Department of Experimental, Diagnostic and Specialty Medicine University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - Annalisa Astolfi
- Giorgio Prodi Cancer Research Centre, University of Bologna, Bologna, Italy
| | - Elisa Grassi
- Department of Experimental, Diagnostic and Specialty Medicine University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - Riccardo Casadei
- Department of Medical and Surgical Sciences, University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | | | | | - Claudio Ricci
- Department of Medical and Surgical Sciences, University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - Salvatore Serravalle
- Department of Medical and Surgical Sciences, "Lalla Seràgnoli" Hematology-Oncology Unit, University of Bologna, Bologna, Italy
| | - Giuseppe Tarantino
- Giorgio Prodi Cancer Research Centre, University of Bologna, Bologna, Italy
| | - Mirella Falconi
- DIBINEM-Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Gabriella Teti
- DIBINEM-Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Valentina Indio
- Giorgio Prodi Cancer Research Centre, University of Bologna, Bologna, Italy
| | - Andrea Pession
- Department of Medical and Surgical Sciences, "Lalla Seràgnoli" Hematology-Oncology Unit, University of Bologna, Bologna, Italy
| | - Francesco Minni
- Department of Medical and Surgical Sciences, University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - Guido Biasco
- Giorgio Prodi Cancer Research Centre, University of Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - Mariacristina Di Marco
- Department of Experimental, Diagnostic and Specialty Medicine University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| |
Collapse
|
7
|
Best LMJ, Rawji V, Pereira SP, Davidson BR, Gurusamy KS. Imaging modalities for characterising focal pancreatic lesions. Cochrane Database Syst Rev 2017; 4:CD010213. [PMID: 28415140 PMCID: PMC6478242 DOI: 10.1002/14651858.cd010213.pub2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Increasing numbers of incidental pancreatic lesions are being detected each year. Accurate characterisation of pancreatic lesions into benign, precancerous, and cancer masses is crucial in deciding whether to use treatment or surveillance. Distinguishing benign lesions from precancerous and cancerous lesions can prevent patients from undergoing unnecessary major surgery. Despite the importance of accurately classifying pancreatic lesions, there is no clear algorithm for management of focal pancreatic lesions. OBJECTIVES To determine and compare the diagnostic accuracy of various imaging modalities in detecting cancerous and precancerous lesions in people with focal pancreatic lesions. SEARCH METHODS We searched the CENTRAL, MEDLINE, Embase, and Science Citation Index until 19 July 2016. We searched the references of included studies to identify further studies. We did not restrict studies based on language or publication status, or whether data were collected prospectively or retrospectively. SELECTION CRITERIA We planned to include studies reporting cross-sectional information on the index test (CT (computed tomography), MRI (magnetic resonance imaging), PET (positron emission tomography), EUS (endoscopic ultrasound), EUS elastography, and EUS-guided biopsy or FNA (fine-needle aspiration)) and reference standard (confirmation of the nature of the lesion was obtained by histopathological examination of the entire lesion by surgical excision, or histopathological examination for confirmation of precancer or cancer by biopsy and clinical follow-up of at least six months in people with negative index tests) in people with pancreatic lesions irrespective of language or publication status or whether the data were collected prospectively or retrospectively. DATA COLLECTION AND ANALYSIS Two review authors independently searched the references to identify relevant studies and extracted the data. We planned to use the bivariate analysis to calculate the summary sensitivity and specificity with their 95% confidence intervals and the hierarchical summary receiver operating characteristic (HSROC) to compare the tests and assess heterogeneity, but used simpler models (such as univariate random-effects model and univariate fixed-effect model) for combining studies when appropriate because of the sparse data. We were unable to compare the diagnostic performance of the tests using formal statistical methods because of sparse data. MAIN RESULTS We included 54 studies involving a total of 3,196 participants evaluating the diagnostic accuracy of various index tests. In these 54 studies, eight different target conditions were identified with different final diagnoses constituting benign, precancerous, and cancerous lesions. None of the studies was of high methodological quality. None of the comparisons in which single studies were included was of sufficiently high methodological quality to warrant highlighting of the results. For differentiation of cancerous lesions from benign or precancerous lesions, we identified only one study per index test. The second analysis, of studies differentiating cancerous versus benign lesions, provided three tests in which meta-analysis could be performed. The sensitivities and specificities for diagnosing cancer were: EUS-FNA: sensitivity 0.79 (95% confidence interval (CI) 0.07 to 1.00), specificity 1.00 (95% CI 0.91 to 1.00); EUS: sensitivity 0.95 (95% CI 0.84 to 0.99), specificity 0.53 (95% CI 0.31 to 0.74); PET: sensitivity 0.92 (95% CI 0.80 to 0.97), specificity 0.65 (95% CI 0.39 to 0.84). The third analysis, of studies differentiating precancerous or cancerous lesions from benign lesions, only provided one test (EUS-FNA) in which meta-analysis was performed. EUS-FNA had moderate sensitivity for diagnosing precancerous or cancerous lesions (sensitivity 0.73 (95% CI 0.01 to 1.00) and high specificity 0.94 (95% CI 0.15 to 1.00), the extremely wide confidence intervals reflecting the heterogeneity between the studies). The fourth analysis, of studies differentiating cancerous (invasive carcinoma) from precancerous (dysplasia) provided three tests in which meta-analysis was performed. The sensitivities and specificities for diagnosing invasive carcinoma were: CT: sensitivity 0.72 (95% CI 0.50 to 0.87), specificity 0.92 (95% CI 0.81 to 0.97); EUS: sensitivity 0.78 (95% CI 0.44 to 0.94), specificity 0.91 (95% CI 0.61 to 0.98); EUS-FNA: sensitivity 0.66 (95% CI 0.03 to 0.99), specificity 0.92 (95% CI 0.73 to 0.98). The fifth analysis, of studies differentiating cancerous (high-grade dysplasia or invasive carcinoma) versus precancerous (low- or intermediate-grade dysplasia) provided six tests in which meta-analysis was performed. The sensitivities and specificities for diagnosing cancer (high-grade dysplasia or invasive carcinoma) were: CT: sensitivity 0.87 (95% CI 0.00 to 1.00), specificity 0.96 (95% CI 0.00 to 1.00); EUS: sensitivity 0.86 (95% CI 0.74 to 0.92), specificity 0.91 (95% CI 0.83 to 0.96); EUS-FNA: sensitivity 0.47 (95% CI 0.24 to 0.70), specificity 0.91 (95% CI 0.32 to 1.00); EUS-FNA carcinoembryonic antigen 200 ng/mL: sensitivity 0.58 (95% CI 0.28 to 0.83), specificity 0.51 (95% CI 0.19 to 0.81); MRI: sensitivity 0.69 (95% CI 0.44 to 0.86), specificity 0.93 (95% CI 0.43 to 1.00); PET: sensitivity 0.90 (95% CI 0.79 to 0.96), specificity 0.94 (95% CI 0.81 to 0.99). The sixth analysis, of studies differentiating cancerous (invasive carcinoma) from precancerous (low-grade dysplasia) provided no tests in which meta-analysis was performed. The seventh analysis, of studies differentiating precancerous or cancerous (intermediate- or high-grade dysplasia or invasive carcinoma) from precancerous (low-grade dysplasia) provided two tests in which meta-analysis was performed. The sensitivity and specificity for diagnosing cancer were: CT: sensitivity 0.83 (95% CI 0.68 to 0.92), specificity 0.83 (95% CI 0.64 to 0.93) and MRI: sensitivity 0.80 (95% CI 0.58 to 0.92), specificity 0.81 (95% CI 0.53 to 0.95), respectively. The eighth analysis, of studies differentiating precancerous or cancerous (intermediate- or high-grade dysplasia or invasive carcinoma) from precancerous (low-grade dysplasia) or benign lesions provided no test in which meta-analysis was performed.There were no major alterations in the subgroup analysis of cystic pancreatic focal lesions (42 studies; 2086 participants). None of the included studies evaluated EUS elastography or sequential testing. AUTHORS' CONCLUSIONS We were unable to arrive at any firm conclusions because of the differences in the way that study authors classified focal pancreatic lesions into cancerous, precancerous, and benign lesions; the inclusion of few studies with wide confidence intervals for each comparison; poor methodological quality in the studies; and heterogeneity in the estimates within comparisons.
Collapse
Affiliation(s)
- Lawrence MJ Best
- Royal Free Campus, UCL Medical SchoolDepartment of SurgeryRowland Hill StreetLondonUKNW32PF
| | - Vishal Rawji
- University College London Medical SchoolLondonUK
| | - Stephen P Pereira
- Royal Free Hospital CampusUCL Institute for Liver and Digestive HealthUpper 3rd FloorLondonUKNW3 2PF
| | - Brian R Davidson
- Royal Free Campus, UCL Medical SchoolDepartment of SurgeryRowland Hill StreetLondonUKNW32PF
| | | | | |
Collapse
|