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Zhao W, Liu S, Cong L, Zhao Y. Imaging Features for Predicting High-Grade Dysplasia or Malignancy in Branch Duct Type Intraductal Papillary Mucinous Neoplasm of the Pancreas: A Systematic Review and Meta-Analysis. Ann Surg Oncol 2021; 29:1297-1312. [PMID: 34554343 DOI: 10.1245/s10434-021-10662-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 08/05/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND The consensus guidelines for branch-duct intraductal papillary mucinous neoplasm (BD-IPMN) of the pancreas are mostly based on imaging features. This study aimed to determine imaging features and their diagnostic accuracy for predicting high-grade dysplasia (HGD)/malignancy in BD-IPMN, including mixed type. METHODS The PubMed, Embase, and Cochrane databases were searched, and data were extracted from relevant studies. As the main diagnostic accuracy index, diagnostic odds ratios (DORs) of imaging features for diagnosing HGD/malignancy in BD-IPMNs were pooled using the random-effects model. A bivariate random-effects approach was used to construct summary receiver operating characteristic curves for sensitivity and specificity estimation. RESULTS The pooled DOR was the highest for the enhanced solid component/mural nodule (MN) (DOR, 12.21; 95 % confidence interval [CI], 6.14-24.27), followed by a main pancreatic duct (MPD) diameter of 10 mm or greater (DOR, 7.93; 95 % CI, 3.02-20.83), solid component (DOR, 4.85; 95 % CI, 2.49-9.42), lymphadenopathy (DOR, 4.84; 95 % CI, 1.11-21.06), MN (DOR, 4.48; 95 % CI, 3.15-6.39), an MPD diameter of 5 mm or greater (DOR, 3.69; 95 % CI, 2.62-5.19), abrupt change in MPD caliber with distal pancreatic atrophy (DOR, 2.65; 95 % CI, 1.66-4.24), thickened/enhancing walls (DOR, 2.38; 95 % CI, 1.57-3.60), and cyst size of 3 cm or larger (DOR, 1.98; 95 % CI, 1.48-2.64). The largest area under the curve (0.89 and 0.95, respectively) and high specificity (0.95 and 0.98, respectively) also were found for enhanced solid component/MN and an MPD diameter of 10 mm or greater, albeit with low sensitivity (0.38 and 0.14, respectively). CONCLUSIONS The aforementioned imaging features could aid in predicting HGD/malignancy of BD-IPMN. Furthermore, enhanced solid component/MN and an MPD diameter of 10 mm or greater were the most important predictors of HGD/malignancy in BD-IPMN and should be considered as indications for surgery.
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Affiliation(s)
- Wenjing Zhao
- Central Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Shanglong Liu
- Department of General Surgery, Affiliated Hospital of Qingdao University, Shandong, China
| | - Lin Cong
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
| | - Yupei Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
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Wu YA, Oba A, Beaty L, Colborn KL, Rodriguez Franco S, Harnke B, Meguid C, Negrini D, Valente R, Ahrendt S, Schulick RD, Del Chiaro M. Ductal Dilatation of ≥5 mm in Intraductal Papillary Mucinous Neoplasm Should Trigger the Consideration for Pancreatectomy: A Meta-Analysis and Systematic Review of Resected Cases. Cancers (Basel) 2021; 13:cancers13092031. [PMID: 33922344 PMCID: PMC8122854 DOI: 10.3390/cancers13092031] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/14/2021] [Accepted: 04/19/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Intraductal papillary mucinous neoplasms (IPMN) are common but difficult to manage since accurate tools for diagnosing malignancy are unavailable. This study evaluates the diagnostic value of main pancreatic duct (MPD) diameter for detecting IPMN malignancy, using a meta-analysis of published data. The result suggests that malignancy is highly prevalent in IPMN with ductal dilatation of >5 mm. Abstract Intraductal papillary mucinous neoplasms (IPMN) are common but difficult to manage since accurate tools for diagnosing malignancy are unavailable. This study tests the diagnostic value of the main pancreatic duct (MPD) diameter for detecting IPMN malignancy using a meta-analysis of published data of resected IPMNs. Collected from a comprehensive literature search, the articles included in this analysis must report malignancy cases (high-grade dysplasia (HGD) and invasive carcinoma (IC)) and MPD diameter so that two MPD cut-offs could be created. The sensitivity, specificity, and odds ratios of the two cutoffs for predicting malignancy were calculated. A review of 1493 articles yielded 20 retrospective studies with 3982 resected cases. A cutoff of ≥5 mm is more sensitive than the ≥10 mm cutoff and has pooled sensitivity of 72.20% and 75.60% for classification of HGD and IC, respectively. Both MPD cutoffs of ≥5 mm and ≥10 mm were associated with malignancy (OR = 4.36 (95% CI: 2.82, 6.75) vs. OR = 3.18 (95% CI: 2.25, 4.49), respectively). The odds of HGD and IC for patients with MPD ≥5 mm were 5.66 (95% CI: 3.02, 10.62) and 7.40 (95% CI: 4.95, 11.06), respectively. OR of HGD and IC for MPD ≥10 mm cutoff were 4.36 (95% CI: 3.20, 5.93) and 4.75 (95% CI: 2.39, 9.45), respectively. IPMN with MPD of >5 mm could very likely be malignant. In selected IPMN patients, pancreatectomy should be considered when MPD is >5 mm.
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Affiliation(s)
- Y.H. Andrew Wu
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
| | - Atsushi Oba
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Laurel Beaty
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- Department of Biostatistics and Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kathryn L. Colborn
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- Department of Biostatistics and Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Surgical Outcomes and Applied Research Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Salvador Rodriguez Franco
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- The Heart Institute, Children’s Hospital Colorado, Aurora, CO 80045, USA
| | - Ben Harnke
- Strauss Health Sciences Library, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
| | - Cheryl Meguid
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
| | - Daniel Negrini
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- Department of Anesthesiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Roberto Valente
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- Department of Surgery and Perioperative Sciences, Umeå University Hospital, 907 37 Umeå, Sweden
| | - Steven Ahrendt
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- University of Colorado Cancer Center, Aurora, CO 80045, USA
| | - Richard D. Schulick
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- University of Colorado Cancer Center, Aurora, CO 80045, USA
| | - Marco Del Chiaro
- Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (Y.H.A.W.); (A.O.); (L.B.); (K.L.C.); (S.R.F.); (C.M.); (D.N.); (R.V.); (S.A.); (R.D.S.)
- University of Colorado Cancer Center, Aurora, CO 80045, USA
- Correspondence:
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Imaging features to distinguish malignant and benign branch-duct type intraductal papillary mucinous neoplasms of the pancreas: a meta-analysis. Ann Surg 2014; 259:72-81. [PMID: 23657084 DOI: 10.1097/sla.0b013e31829385f7] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To systematically determine the imaging findings for distinguishing malignant and benign branch-duct type intraductal papillary mucinous neoplasms (BD-IPMNs), including mixed type, and their diagnostic value through meta-analysis of published studies. BACKGROUND Management of BD-IPMNs, including mixed type, largely relies on imaging findings. The current knowledge on imaging findings to distinguish malignant and benign BD-IPMNs has weak evidence and is mostly from scattered individual retrospective studies. METHODS Thorough literature search in Ovid-MEDLINE and EMBASE databases was conducted to identify studies where findings of computed tomography, magnetic resonance imaging, and endoscopic ultrasonography of BD-IPMNs with or without main pancreatic duct (MPD) dilatation were correlated with surgical/pathological findings. Review of 1128 article candidates, including full-text review of 102 articles, identified 23 eligible articles with a total of 1373 patients for meta-analysis. Dichotomous data regarding distinction between malignant and benign BD-IPMNs were pooled using random effects model to obtain the diagnostic odds ratios (DORs) and their 95% confidence intervals (CIs) of various individual imaging findings for diagnosing malignant BD-IPMN. RESULTS Presence of mural nodules revealed the highest pooled DOR (95% CI) of 6.0 (4.1-8.8) followed by MPD dilatation [3.4 (2.3-5.2)], thick septum/wall [unadjusted, 3.3 (1.5-6.9); publication bias-adjusted, 2.3 (0.9-5.5)], and cyst size greater than 3 cm [2.3 (1.5-3.5)]. Multilocularity and multiplicity of the cystic lesions did not reveal statistically significant association with malignancy. CONCLUSIONS Presence of mural nodules should be regarded highly suspicious for malignancy warranting a surgical excision whereas cyst size greater than 3 cm, MPD dilatation (5-9 mm), or thick septum/wall may better be managed by careful observation and/or further evaluation.
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