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Intraductal pancreatic mucinous neoplasm

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https://www.readbyqxmd.com/read/27926366/analysis-of-pancreatic-cyst-fluid
#1
REVIEW
Saowanee Ngamruengphong, Anne Marie Lennon
Pancreatic cysts are extremely common, and are identified in between 2% to 13% on abdominal imaging studies. Most pancreatic cysts are pseudocysts, serous cystic neoplasms, mucinous cystic neoplasms, or intraductal papillary mucinous neoplasms. The management of pancreatic cysts depends on whether a cyst is benign, has malignant potential, or harbors high-grade dysplasia or invasive carcinoma. The diagnosis of pancreatic cysts, and assessment of risk of malignant transformation, incorporates clinical history, computed tomography (CT), magnetic resonance imaging (MRI), endoscopic ultrasound, and fine-needle aspiration of cyst fluid...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27926360/pathology-of-pancreatic-cancer-precursor-lesions
#2
REVIEW
Michaël Noë, Lodewijk A A Brosens
To better understand pancreatic ductal adenocarcinoma (PDAC) and improve its prognosis, it is essential to understand its origins. This article describes the pathology of the 3 well-established pancreatic cancer precursor lesions: pancreatic intraepithelial neoplasia, intraductal papillary mucinous neoplasm, and mucinous cystic neoplasm. Each of these precursor lesions has unique clinical findings, gross and microscopic features, and molecular aberrations. This article focuses on histopathologic diagnostic criteria and reporting guidelines...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27920477/evolution-of-incidental-branch-duct-intraductal-papillary-mucinous-neoplasms-of-the-pancreas-a-study-with-magnetic-resonance-imaging-cholangiopancreatography
#3
Rossano Girometti, Riccardo Pravisani, Sergio Giuseppe Intini, Miriam Isola, Lorenzo Cereser, Andrea Risaliti, Chiara Zuiani
AIM: To investigate the type and timing of evolution of incidentally found branch-duct intraductal papillary mucinous neoplasms (bd-IPMN) of the pancreas addressed to magnetic resonance imaging cholangiopancreatography (MRCP) follow-up. METHODS: We retrospectively evaluated 72 patients who underwent, over the period 2006-2016, a total of 318 MRCPs (mean 4.4) to follow-up incidental, presumed bd-IPMN without signs of malignancy, found or confirmed at a baseline MRCP examination...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27902614/associating-pancreaticostomy-and-biliary-irrigation-for-staged-pancreaticoduodenectomy-approach-to-pancreatic-intraductal-papillary-mucinous-neoplasm-with-recurrent-cholangitis-and-severe-jaundice-a-case-report
#4
Chao Dai, Siyuan Lou, Fan Zhou
PATIENT CONCERNS: A 63-year-old man was hospitalized with history of abdominal pain since more than 1 year, and that of fever with chills since 2 weeks. DIAGNOSES: Based on the laboratory investigations and radiologic findings, a preliminary diagnosis of pancreatic intraductal papillary mucinous neoplasm (IPMN) with recurrent cholangitis and severe jaundice was made. INTERVENTIONS: An initial attempt at endoscopic and image-guided drainage proved unsuccessful...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27900458/utility-of-whole-lesion-adc-histogram-metrics-for-assessing-the-malignant-potential-of-pancreatic-intraductal-papillary-mucinous-neoplasms-ipmns
#5
David H Hoffman, Justin M Ream, Christina H Hajdu, Andrew B Rosenkrantz
PURPOSE: To evaluate whole-lesion ADC histogram metrics for assessing the malignant potential of pancreatic intraductal papillary mucinous neoplasms (IPMNs), including in comparison with conventional MRI features. METHODS: Eighteen branch-duct IPMNs underwent MRI with DWI prior to resection (n = 16) or FNA (n = 2). A blinded radiologist placed 3D volumes-of-interest on the entire IPMN on the ADC map, from which whole-lesion histogram metrics were generated. The reader also assessed IPMN size, mural nodularity, and adjacent main-duct dilation...
November 30, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27889759/cytomorphological-features-useful-to-prevent-errors-in-the-diagnosis-of-pancreatic-adenocarcinoma-by-fine-needle-aspiration-cytology
#6
Zhikai Chi, Howard H Wu, Harvey Cramer, Jingmei Lin, Shaoxiong Chen
OBJECTIVES: Endoscopic ultrasound-guided fine-needle aspiration (FNA) is now widely used as a primary tool to diagnose pancreatic neoplasms. However, criteria that can reduce the risk of overdiagnosing pancreatic adenocarcinoma by FNA have not been adequately defined in the literature. This study aims to identify characteristic cytomorphological features that are helpful in distinguishing pancreatic adenocarcinoma from its mimics. STUDY DESIGN: Five false-positive FNA cases (group A) diagnosed as adenocarcinoma (4 cases) and suspicious for adenocarcinoma (1 case) by FNA, were identified by searching our laboratory information system...
November 26, 2016: Acta Cytologica
https://www.readbyqxmd.com/read/27884612/enucleation-a-treatment-alternative-for-branch-duct-intraductal-papillary-mucinous-neoplasms
#7
Joerg Kaiser, Stefan Fritz, Miriam Klauss, Frank Bergmann, Ulf Hinz, Oliver Strobel, Lutz Schneider, Markus W Büchler, Thilo Hackert
BACKGROUND: Small, asymptomatic, branch-duct intraductal papillary mucinous neoplasms of the pancreas are often kept under surveillance despite their malignant potential. The management of branch-duct intraductal papillary mucinous neoplasm is controversial with regard to indications and extent of any operative intervention. The present study aimed to evaluate enucleation as an alternative operative approach for branch-duct intraductal papillary mucinous neoplasms to exclude and prevent malignancy...
November 21, 2016: Surgery
https://www.readbyqxmd.com/read/27875639/long-term-follow-up-of-small-pancreatic-cystic-lesions-in-liver-transplant-recipients
#8
Sirachat Vidhyarkorn, Surachate Siripongsakun, Jennifer Yu, James Sayre, Vatche M Agopian, Francisco Durazo, David S Lu
BACKGROUND: Incidental small pancreatic cystic lesions (PCLs) are often found on pre-operative imaging in patients undergoing orthotropic liver transplantation (OLT).While these are considered benign or of low malignant potential, the influence of immunosuppression after OLT may be of concern. The aim of this study was to observe the long term outcome of these small pancreatic cystic lesions (PCLs) in post OLT patients. METHODS: An institutional OLT database of 1,778 consecutive OLT patients from January 2000 to December 2010 was analyzed...
November 22, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27865286/intraductal-papillary-mucinous-neoplasm-of-the-pancreas
#9
REVIEW
Zhi Ven Fong, Carlos Fernández-Del Castillo
The incidence of intraductal papillary mucinous neoplasms (IPMNs) of the pancreas has been rising in the past 2 decades, driven mainly by the widespread use of cross-sectional imaging. IPMNs are intraductal mucin-producing neoplasms that involve the main pancreatic duct or its side branches and lack the ovarian stroma typically seen in mucinous cystic neoplasms. The International Association of Pancreatology released consensus guidelines in 2006 and 2012 providing clinical algorithms based on IPMN features and risk of malignancy...
December 2016: Surgical Clinics of North America
https://www.readbyqxmd.com/read/27864998/rnf43-mutation-frequently-occurs-with-gnas-mutation-and-mucin-hypersecretion-in-intraductal-papillary-neoplasms-of-the-bile-duct
#10
Jia-Huei Tsai, Jau-Yu Liau, Chang-Tsu Yuan, Mei-Ling Cheng, Ray-Hwang Yuan, Yung-Ming Jeng
RNF43 is a tumor suppressor gene that is frequently mutated in intraductal papillary mucinous neoplasms of the pancreas (IPMN). RNF43 suppresses the Wnt/β-catenin signaling pathway. We conducted mutation analysis of RNF43 in intraductal papillary neoplasms of the bile duct (IPNBs) and identified RNF43 mutation in 6 (12%) out of 50 IPNBs. RNF43 mutation was more frequent in the intestinal subtype of IPNB (17%) than in the gastric/pancreatobiliary subtype (5%). There were a strong association of RNF43 mutation with GNAS (P = ...
November 16, 2016: Histopathology
https://www.readbyqxmd.com/read/27863050/internal-hernia-through-a-transverse-mesocolon-defect-after-laparoscopic-distal-pancreatectomy-report-of-a-case
#11
Yoshihide Nanno, Tadahiro Goto, Hirochika Toyama, Sadaki Asari, Sachio Terai, Sachiyo Shirakawa, Takuya Mizumoto, Yuki Ueda, Masahiro Kido, Tetsuo Ajiki, Takumi Fukumoto, Yonson Ku
We report a case of an internal hernia through a transverse mesocolon defect after laparoscopic distal pancreatectomy. The patient was a 58-year-old man with an intraductal papillary mucinous neoplasm of the pancreatic body who underwent laparoscopic distal pancreatectomy. During surgery, an approximately 5-cm defect in the transverse mesocolon was inadvertently made. The defect was not closed as it was thought to be large enough to preclude incarceration. However, the patient developed a bowel obstruction 2 months postoperatively...
November 11, 2016: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/27829085/assessment-of-a-revised-management-strategy-for-patients-with-intraductal-papillary-mucinous-neoplasms-involving-the-main-pancreatic-duct
#12
Motokazu Sugimoto, Irmina A Elliott, Andrew H Nguyen, Stephen Kim, V Raman Muthusamy, Rabindra Watson, O Joe Hines, David W Dawson, Howard A Reber, Timothy R Donahue
Importance: According to the 2012 International Consensus Guidelines, the diagnostic criterion of intraductal papillary mucinous neoplasms (IPMNs) involving the main duct (MD IPMNs) or the main and branch ducts (mixed IPMNs) of the pancreatic system is a main pancreatic duct (MPD) diameter of 5.0 mm or greater on computed tomography (CT) or magnetic resonance imaging (MRI). However, surgical resection is recommended for patients with an MPD diameter of 10.0 mm or greater, which is characterized as a high-risk stigma...
November 9, 2016: JAMA Surgery
https://www.readbyqxmd.com/read/27825416/clinicopathological-features-of-intraductal-pancreatic-neuroendocrine-tumors
#13
Xiao-Yan Chang, Cong-Wei Jia, Yun-Xiao Meng, Jie Chen
Objective To evaluate the clinical and pathologic characteristics of intraductal pancreatic neuroendocrine tumors (PanNETs). Methods Four cases of intraductal PanNETs were studied by light microscopy and immunohistochemistry with the analysis of morphologic features and review of relevant literatures. Results Two female patients and two male patients aged 41- 58 years were enrolled in this study. The chief complaint was abdominal pain in two patients,vomiting in one patient,and jaundice in the last patient...
October 10, 2016: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/27824244/a-large-multicenter-study-of-recurrence-after-surgical-resection-of-branch-duct-intraductal-papillary-mucinous-neoplasm-of-the-pancreas
#14
Linda Yan, Ali A Siddiqui, Sobia Laique, Monica Saumoy, Michel Kahaleh, Joseph Yoo, Ankush Kalra, Arun Mathew, Jessica Sterling, Rema Rao, Michael Lieberman, Natalie Cosgrove
BACKGROUND: Surgery for pancreatic branch-duct intraductal papillary mucinous neoplasm (BDIPMN) is indicated for therapy of symptomatic patients and to prevent development of invasive cancer. There is currently no consensus on management of BD-IPMN patients after surgical resection. The aim of this retrospective multicenter study was to determine the recurrence and long-term survival after surgical resection of BD-IPMN and to determine the predictive factors of recurrence. METHODS: All patients who underwent surgery for BD-IPMN from 2005 to 2011 at 2 centers were identified...
November 8, 2016: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/27816717/pancreatic-serous-cystic-neoplasms-accompanying-other-pancreatic-tumors
#15
So-Woon Kim, In Hye Song, Soyeon An, So Yeon Kim, Hyoung Jung Kim, Ki-Byung Song, Dae Wook Hwang, Sang Soo Lee, Jae Ho Byun, Dong-Wan Seo, Song Cheol Kim, Eunsil Yu, Seung-Mo Hong
Serous cystic neoplasms (SCNs) are benign cystic neoplasms that predominantly occur in the tail of the pancreas in elderly women. It is well known that patients with von Hippel-Lindau syndrome can develop SCNs and neuroendocrine tumors in the pancreas. However, our understanding on SCNs accompanying other pancreatic tumors (SCNAOPTs) is limited. We compared the clinicopathologic features of 15 surgically resected SCNAOPTs with 259 conventional SCNs. The prevalence of SCNAOPT was 5%. The SCNAOPTs were significantly smaller than conventional solitary SCNs, and they were more commonly observed in the head of the pancreas, while conventional solitary SCNs were more frequently noted in the body and tail...
November 2, 2016: Human Pathology
https://www.readbyqxmd.com/read/27816353/predisposing-factors-for-pancreatic-adenocarcinoma-what-is-the-role-of-imaging
#16
M-P Vullierme, M Lagadec
Early detection of pancreatic adenocarcinoma is the goal of imaging, enabling curative surgery. The identification of high-grade dysplastic precursor lesions is even more beneficial. Two forms are now better known: pancreatic intraepithelial neoplasia (PanIN) and intraductal papillary mucinous neoplasm (IPMN). To detect these lesions with imaging, we need to know the patterns associated with them. A screening program could then be used to pinpoint them. This program could not be applied to the entire population...
December 2016: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/27809876/pancreatic-resection-for-intraductal-papillary-mucinous-neoplasm-a-thirteen-year-single-center-experience
#17
Katharina Marsoner, Johannes Haybaeck, Dora Csengeri, James Elvis Waha, Jakob Schagerl, Rainer Langeder, Hans Joerg Mischinger, Peter Kornprat
BACKGROUND: The purpose of this study is to review our results for pancreatic resection in patients with intraductal papillary mucinous neoplasm (IPMN) with and without associated carcinoma. METHODS: A total of 54 patients undergoing pancreatic resection for IPMN in a single university surgical center (Medical University of Graz) were reviewed retrospectively. Their survival rates were compared to those of patients with pancreatic ductal adenocarcinoma. RESULTS: Twenty-four patients exhibit non-invasive IPMN and thirty patients invasive IPMN with associated carcinoma...
November 4, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27806771/-surgical-treatment-of-pancreatic-cystic-neoplasms-follow-up-or-surgical-intervention
#18
X D Tian, Y M Yang
Pancreatic cystic neoplasm(PCN) are common and increasingly detected in recent years including serous cystic neoplasms, mucinous cystic neoplasms, intraductal papillary mucinous neoplasms, solid pseudopapillary neoplasms and cystic pancreatic neuroendocrine tumors.Some of PCN have a low risk of malignancy while others have a high risk and need interventions, even in the same type of cystic neoplasms. The management of PCN requires risk stratification for malignant potential, and clinicians should have a systematic approach for establishing a diagnosis and determining which patients require surgical treatment...
November 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27795812/mucins-in-neoplasms-of-pancreas-ampulla-of-vater-and-biliary-system
#19
REVIEW
Dimitrios Moschovis, Giorgos Bamias, Ioanna Delladetsima
Tumors of the pancreas, the ampulla of Vater, and the extrahepatic and intrahepatic bile ducts have significant histological similarities due to the common embryonic origin of the pancreatobiliary system. This obviates the need for discovery of biomarkers with diagnostic and prognostic value for these tumors. Mucins, especially MUC-1, -2, -4 and -5AC, are important candidates for developing into such reliable biomarkers. Increased expression of MUC1 occurs in pancreatic ductal adenocarcinomas and is associated with increased degrees of dysplasia in pancreatic intraepithelial neoplasia (PanIN)...
October 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27788047/updates-on-precancerous-lesions-of-the-biliary-tract-biliary-precancerous-lesion
#20
Sanaz Ainechi, Hwajeong Lee
Precursor lesions of invasive adenocarcinoma of the bile duct (cholangiocarcinoma) have been increasingly recognized during the past decade because of the results of multiple studies on the carcinogenesis of cholangiocarcinoma, technologic advancements in diagnostic imaging modalities, and an increase in the volume of elective procedures. The two main precursor lesions of cholangiocarcinoma that have evolved are biliary intraepithelial neoplasia and intraductal papillary neoplasm of the bile duct. These lesions demonstrate histomorphologic similarities to pancreatic intraepithelial neoplasia and intraductal papillary mucinous neoplasm of the pancreas, respectively, whereas mechanisms of carcinogenesis and risk of progressive disease appear distinct...
November 2016: Archives of Pathology & Laboratory Medicine
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