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Pancreatic neoplasm

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https://www.readbyqxmd.com/read/27909644/primary-squamous-cell-carcinoma-of-the-pancreas-as-a-cause-of-biliary-obstruction
#1
Kyle Rowe, Jeet Mehta, Fredy Nehme, William Salyers
Primary squamous cell carcinoma of the pancreas (SCCP) is a rare neoplasm, given a lack of naturally occurring squamous cells within the pancreas, accounting for only 0.2% of all pancreatic cancers. The etiology is unknown. Symptomatology is non-specific and similar to other pancreatic neoplasms. No non-invasive testing can adequately rule in SCCP, and workup should proceed similarly to any pancreatic mass. Tissue sampling is required for diagnosis and guidance of further management, most commonly by endoscopic ultrasound with fine needle aspirate...
October 31, 2016: Curēus
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
#2
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
#3
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/27894508/intrapancreatic-accessory-spleen-ipas-a-single-institution-experience-and-review-of-the-literature
#4
Neal Bhutiani, Michael E Egger, Catherine A Doughtie, Elizabeth S Burkardt, Charles R Scoggins, Robert C G Martin, Kelly M McMasters
INTRODUCTION: Accessory spleens located within the pancreatic parenchyma (intrapancreatic accessory spleen, IPAS) pose a unique clinical challenge. In many cases, despite imaging and other diagnostic studies, malignancy cannot be excluded and patients are subjected to pancreatic resection. We review our experience with the presentation, diagnosis, and treatment of patients with IPAS to provide insight into improving pre-operative evaluation of these patients METHODS: A retrospective chart review identified seven patients who underwent surgical resection of an intrapancreatic spleen at University of Louisville Hospital between 2004 and 2015...
November 23, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/27890912/performance-of-laparoscopic-pancreatoduodenectomy-for-solid-pseudopapillary-tumor-of-pancreas
#5
Orlando Jorge M Torres, José Maria A Moraes Junior, Anmara Moura Moraes, Camila Cristina S Torres, Antonio Talvane T Oliveira
BACKGROUND Solid pseudopapillary tumor of the pancreas (Frantz tumor) is a rare, low-grade malignant neoplasm. Laparoscopic pancreatoduodenectomy is a good approach for tumors located in the pancreatic head. We present two successful cases in young women. CASE REPORT A 19-year-old woman was admitted to Department of Digestive Surgery due to epigastric pain, nausea, and vomiting. Computed tomography scan of the abdomen was performed, and a 3.0×2.2 cm solid tumor localized in the head of the pancreas was observed...
November 28, 2016: American Journal of Case Reports
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/27877011/analysis-of-clinical-characteristics-and-treatment-of-pancreatic-cystic-tumors
#8
Lei You, Jianchun Xiao, Zhe Cao, Wanying Zhang, Quan Liao, Menghua Dai, Taiping Zhang, Yupei Zhao
OBJECTIVE: To summarize experience in the diagnosis and treatment of pancreatic cystic neoplasms. METHODS: This is a retrospective study of 207 patients who were diagnosed with pancreatic cystic tumors at Peking Union Medical College Hospital between Jan 2009 and Mar 2014. Clinical data, such as clinical manifestations, radiological and pathological images and surgical recordings, were collected. RESULTS: Of the 207 included patients, females accounted for 76...
October 2016: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/27875639/long-term-follow-up-of-small-pancreatic-cystic-lesions-in-liver-transplant-recipients
#9
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/27874879/bullous-pemphigoid-associated-with-a-lymphoepithelial-cyst-of-the-pancreas
#10
Preston W Chadwick, Francis R Spitz, Daniel M Kwa, Waine C Johnson, Warren R Heymann
Bullous pemphigoid (BP) is an acquired, autoimmune, subepidermal blistering disorder. A possible paraneoplastic association has been suggested; however, debate remains regarding the precise relationship of these neoplasms with BP. We present a case of recalcitrant BP in a 67-year-old man with a pancreatic neoplasm that was found to be a lymphoepithelial cyst. Immunoperoxidase staining of the cyst demonstrated C3d along the basement membrane of the stratified squamous epithelium, suggesting that the BP may have involved the lymphoepithelial cyst itself...
October 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/27873041/the-diagnostic-challenge-of-the-sequelae-of-acute-pancreatitis-on-ct-imaging-a-pictorial-essay
#11
REVIEW
Mark Hughey, Myles Taffel, Robert K Zeman, Smita Patel, Michael C Hill
PURPOSE: The purpose of the study was to present a pictorial review of the long-term sequelae of acute pancreatitis on CT imaging as these findings can cause diagnostic confusion in the absence of a proper clinical history and/or prior CT imaging. METHODS: We retrospectively identified 81 patients who had an episode of acute pancreatitis with diagnostic findings on CT and also underwent one or more follow-up CT scans at least 1 month beyond the acute episode. The residual findings on all follow-up CT scans were tabulated, including the time interval since the initial bout of acute pancreatitis...
November 21, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27866907/radiofrequency-ablation-for-intraductal-extension-of-ampullary-neoplasms
#12
Tarun Rustagi, Shayan Irani, D Nageshwar Reddy, Barham K Abu Dayyeh, Todd H Baron, Christopher J Gostout, Michael J Levy, John Martin, Bret T Petersen, Andrew Ross, Mark D Topazian
BACKGROUND AND AIMS: Extension of ampullary adenomas into the common bile duct (CBD) or pancreatic duct (PD) may be difficult to treat endoscopically. We evaluated the feasibility, safety, and efficacy of endoscopic radiofrequency ablation (RFA) in management of ampullary neoplasms with intraductal extension. METHODS: Multicenter, retrospective analysis of all patients with intraductal extension of ampullary neoplasms treated with endoscopic RFA between February 2012 and June 2015...
November 17, 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27865287/surgical-management-of-pancreatic-neuroendocrine-tumors
#13
REVIEW
Jason B Liu, Marshall S Baker
Pancreatic neuroendocrine tumors (PNETs) are a rare, heterogeneous group of neoplasms infamous for their endocrinopathies. Up to 90% of PNETs, however, are nonfunctional and are frequently detected incidentally on axial imaging during the evaluation of vague abdominal symptoms. Surgery remains the mainstay of therapy for patients diagnosed with both functional and nonfunctional PNETs. However, the multifaceted nature of PNETs challenges treatment decision making. In general, resection is recommended for patients with acceptable perioperative risk and amenable lesions...
December 2016: Surgical Clinics of North America
https://www.readbyqxmd.com/read/27865286/intraductal-papillary-mucinous-neoplasm-of-the-pancreas
#14
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/27865275/imaging-evaluation-of-pancreatic-cancer
#15
REVIEW
Myra Kay Feldman, Namita Sharma Gandhi
Imaging studies are critical for the detection, characterization, initial staging, management, and monitoring of pancreatic cancer cases. Treatment of pancreatic cancer requires a multidisciplinary approach. Ideally, assessing resectablility with imaging and subsequent treatment decisions should be made at a high-volume center of excellence with a multidisciplinary team. This article reviews the major imaging modalities used to evaluate pancreatic neoplasms, with an emphasis on pancreatic imaging protocols...
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
#16
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/27864816/giant-insulinoma-report-of-a-case-and-review-of-published-reports
#17
Kazumitsu Ueda, Tetsuro Taira, Hiroyuki Hakoda, Shoko Nakata, Shinya Okata, Takeshi Nagai, Shigeo Aoki, Hideyuki Mishima, Akihiko Sako, Tsunehiko Maruyama, Minoru Okumura
BACKGROUND: Larger insulinomas are reportedly more likely to be malignant; however, their biological behavior has not been clearly elucidated. We here report the characteristics and treatment of a giant insulinoma with local invasion and lymph node metastasis. We also review published reports concerning the clinical features of giant insulinomas and comparing their grading with that of pancreatic neuroendocrine tumors. CASE PRESENTATION: A 71-year-old man was referred to our hospital for investigation of persistent hypoglycemia...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27864124/cd133-expression-in-well-differentiated-pancreatic-neuroendocrine-tumors-a-potential-predictor-of-progressive-clinical-courses
#18
Yasuhiro Sakai, Seung-Mo Hong, Soyeon An, Joo Young Kim, Denis Corbeil, Jana Karbanová, Kyoko Otani, Kohei Fujikura, Ki-Byung Song, Song Cheol Kim, Masayuki Akita, Yoshihide Nanno, Hirochika Toyama, Takumi Fukumoto, Yonson Ku, Takanori Hirose, Tomoo Itoh, Yoh Zen
The present study aimed to elucidate whether the stemness molecule, CD133, is expressed in well-differentiated pancreatic neuroendocrine tumors (PanNETs; WHO grades 1 and 2) and establish its clinical relevance using two separate cohorts. In the first series (n=178) in which tissue microarrays were available, immunohistochemistry revealed that CD133 was expressed in 14 cases (8%). CD133+ PanNETs had higher TNM stages (P<.01), more frequent lymphovascular invasion (P=.01), and higher recurrence rates (P=...
November 15, 2016: Human Pathology
https://www.readbyqxmd.com/read/27863050/internal-hernia-through-a-transverse-mesocolon-defect-after-laparoscopic-distal-pancreatectomy-report-of-a-case
#19
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/27861198/digital-subtraction-of-magnetic-resonance-images-improves-detection-and-characterization-of-pancreatic-neuroendocrine-neoplasms
#20
Riccardo De Robertis, Paolo Tinazzi Martini, Sara Cingarlini, Silvia Ortolani, Giovanni Butturini, Paolo Regi, Luca Landoni, Giampaolo Tortora, Paolo Pederzoli, Mirko D'Onofrio
OBJECTIVE: The aim of this study was to evaluate the usefulness of digital image subtraction of contrast-enhanced magnetic resonance (MR) images for detection and characterization of pancreatic neuroendocrine neoplasms (PanNENs). METHODS: Magnetic resonance examinations of 50 histologically verified PanNENs were retrospectively evaluated by 2 radiologists; 50 ductal adenocarcinomas were included as a control group. Late arterial phase images and correspondent subtracted images were analyzed...
November 17, 2016: Journal of Computer Assisted Tomography
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