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https://www.readbyqxmd.com/read/29341470/cytological-features-of-mixed-adenoneuroendocrine-carcinoma-of-the-ampulla-of-vater-a-case-report-with-immunocytochemical-analyses
#1
Saya Yoshioka, Yusuke Ebisu, Mitsuaki Ishida, Yoshiko Uemura, Hiroaki Yanagimoto, Sohei Satoi, Koji Tsuta
Mixed adenoneuroendocrine carcinoma (MANEC) is defined as a tumor that has morphologically recognizable both adenocarcinoma and neuroendocrine carcinoma components comprising at least 30% of either components. MANEC occurring in the ampulla of Vater is extremely rare, and only 16 cases have been reported in the English language literature. In the present report, we describe the first case of MANEC of the ampulla of Vater with immunocytochemical analyses. An 82-year-old Japanese male was incidentally found to have a tumorous lesion in the ampulla of Vater...
January 16, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29339358/family-history-of-cancer-and-risk-of-biliary-tract-cancers-results-from-the-biliary-tract-cancers-pooling-project
#2
Alison L Van Dyke, Margaret S Langhamer, Bin Zhu, Ruth M Pfeiffer, Demetrius Albanes, Gabriella Andreotti, Laura E Beane Freeman, Andrew T Chan, Neal D Freedman, Susan M Gapstur, Graham G Giles, Francine Grodstein, Linda M Liao, Juhua Luo, Roger L Milne, Kristine R Monroe, Marian L Neuhouser, Jenny N Poynter, Mark P Purdue, Kim Robien, Catherine Schairer, Rashmi Sinha, Stephanie J Weinstein, Xuehong Zhang, Jessica L Petrick, Katherine A McGlynn, Peter T Campbell, Jill Koshiol
BACKGROUND: Although some familial cancer syndromes include biliary tract cancers (BTCs) (cancers of the gallbladder, intrahepatic and extrahepatic bile ducts, and ampulla of Vater), the few studies that have examined the relationships between family history of cancer (FHC) and BTCs have reported inconclusive findings. The objective of this study was to investigate the associations of FHC with risk of BTC in the Biliary Tract Cancers Pooling Project (BiTCaPP). METHODS: We used Cox proportional hazards regressions models to estimate HRs and 95% confidence intervals for associations between FHC (any, 1st degree, in female relative, in male relative, relative with gastrointestinal cancer, and relative with hormonally-related cancer) and BTC risk by anatomic site within the biliary tract, adjusting for sex and race/ethnicity...
January 16, 2018: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29277093/hemosuccus-pancreaticus-in-the-simple-mucinous-cyst-of-the-pancreas
#3
I L Eok Jo, Dae Hwan Kang, Cheol Woong Choi, Hyung Wook Kim, Su Jin Kim, Hyeong Seok Nam, Dae Gon Ryu
Hemosuccus pancreaticus is an unusual gastrointestinal hemorrhage through the main pancreatic duct. We report a rare case of hemosuccus pancreaticus due to a simple mucinous cyst of the pancreas. A 52-year-old man who had been followed-up for a suspected branch duct intraductal papillary mucinous neoplasm (IPMN) visited the emergency room due to hematochezia. Endoscopy showed active bleeding from the ampulla. Computed tomography revealed hemorrhage in a 2.0-cm cystic mass in the pancreatic body. The patient was diagnosed with hemosuccus pancreaticus caused by bleeding into the main pancreatic duct from suspected IPMN...
December 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29259495/bilateral-tubal-pregnancies-after-a-single-embryo-transfer
#4
Nobuo Sugawara, Rie Sato, Mika Kato, Tomomi Manome, Yasuyuki Kimura, Yasuhisa Araki, Yasuyuki Araki
Case: To present an extremely rare case of bilateral tubal pregnancies following a single-embryo transfer in a woman with a 4 year history of infertility prior to seeking assisted reproductive technology. Outcome: A pregnancy resulted from the transfer of an embryo that had been thawed from a frozen blastocyst during a hormone replacement cycle. An ultrasound that was performed at 5 weeks and 5 days of gestation revealed a gestational sac, embryo, and heartbeat in the right fallopian tube and similar signs of a gestational sac in the left fallopian tube...
October 2017: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29259073/phase-ii-study-of-panitumumab-in-ras-wild-type-metastatic-adenocarcinoma-of-small-bowel-or-ampulla-of-vater
#5
Pat Gulhati, Kanwal Raghav, Rachna Shroff, Gauri Varadhachary, Milind Javle, Wei Qiao, Huamin Wang, Jeffrey Morris, Robert Wolff, Michael J Overman
LESSONS LEARNED: Panitumumab has no clinical activity in metastatic RAS wild-type small bowel adenocarcinoma (SBA) and ampullary adenocarcinoma (AAC), possibly due to the foregut and midgut derivation of small bowel and ampulla.These results, along with findings from genomic characterization of SBA, suggest that SBA represents a unique intestinal malignancy and treatments should not be habitually extrapolated from colorectal cancer.Further studies evaluating the benefit of targeted therapies exclusively in SBA and AAC are warranted...
December 19, 2017: Oncologist
https://www.readbyqxmd.com/read/29241741/vasitis-nodosa-and-related-lesions-a-modern-immunohistochemical-staining-profile-with-special-emphasis-on-novel-diagnostic-dilemmas
#6
Brie E Kezlarian, Liang Cheng, Nilesh S Gupta, Sean R Williamson
Vasitis nodosa is a benign proliferation of vas deferens epithelium, thought to be a response to trauma or obstruction, usually vasectomy. Although histologic features mimic malignancy, diagnosis is usually straightforward due to the clinical context. We analyzed 21 specimens with vasitis or epididymitis nodosa with antibodies to PAX8, CD10, p63, alpha-methyl-acyl-coA-racemase (AMACR), GATA3, prostein, NKX3.1, and prostate-specific antigen (PSA). Two diagnostically problematic cases included 1) florid bladder muscle involvement after prostatectomy and 2) involvement of the ampulla and ejaculatory duct in a radical prostatectomy specimen...
December 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/29238914/clinical-and-genetic-implications-of-dna-mismatch-repair-deficiency-in-biliary-tract-cancers-associated-with-lynch-syndrome
#7
Jordan M Cloyd, Yun Shin Chun, Naruhiko Ikoma, Jean Nicolas Vauthey, Tlhomas A Aloia, Amanda Cuddy, Miguel A Rodriguez-Bigas, Y Nancy You
PURPOSE: Patients with Lynch syndrome (LS) have a significantly elevated lifetime risk of developing biliary tract cancers (BTCs) compared to the general population. However, few studies have characterized the clinical characteristics, genetic features, or long-term outcomes of mismatch-repair deficient (dMMR) cholangiocarcinomas associated with LS. METHODS: A retrospective review of a prospectively maintained Familial High-Risk GI Cancer Clinic database identified all patients with BTCs evaluated from 2006 to 2016 who carried germline mutations in MLH1, MSH2, MSH6, or PMS2...
December 14, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/29236865/microscopic-aspects-of-electrosensory-system-on-the-partially-euryhaline-lesser-guitarfish
#8
Bianca S Rangel, Natascha Wosnick, Alberto F Amorim, José Roberto K, Rose E G Rici
The electrosensory system on elasmobranchs consists of subcutaneous electroreceptor organs known as ampullae of Lorenzini. The present study investigated the ampullae of Lorenzini morphology of the lesser guitarfish Zapteryx brevirostris, using light microscopy and scanning electron microscopy. The pore number found in the ventral skin surface is much higher than that found in the dorsal portion, characteristic of species that inhabit the euphotic zone. Under light microscopy it was possible to observe that the wall canal consists of a single layer of squamous epithelial cells...
December 7, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29230130/periampullary-carcinoma-unusual-sites-of-metastasis
#9
Anju Bansal, Varsha Dalal, Manveen Kaur, Fouzia Siraj
Background: Periampullary neoplasms include carcinomas of the duodenum, ampulla of Vater, distal common bile duct, and pancreas. The aggressive course of these neoplasms is attributable to the delay in diagnosis, as patients have no symptoms until advanced stages of the disease. More than half of patients have distant metastasis at the time of diagnosis. The most frequent sites of metastasis are the liver, lymph nodes, peritoneum, lung, bone, kidney, and, rarely the skin. Case Report: We report the case of a 45-year-old female patient with adenocarcinoma of the ampulla of Vater metastasizing to the right parietal skull with overlying cutaneous involvement 1 year after a Whipple procedure...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/29222962/east-meets-west-historical-investigation-of-non-operative-biliary-interventions
#10
EDITORIAL
Takao Itoi, Todd H Baron
Endoscopic retrograde cholangiopancreatography (ERCP) has become an established procedure not only for diagnosis using direct opacification, but also for various therapeutic interventions within the pancreaticobiliary system. This concept, "non-operative and intraluminal retrograde approach to the ampulla of Vater", which is the outlet for both the pancreatic duct and bile duct, was first described by radiologists Rabinov and Simon in 1965 [1]. They performed cannulation and injection of the ampulla of Vater by intubation using a new instrument through the mouth under television fluoroscopic control...
December 9, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/29199665/metastasectomy-for-recurrent-or-metastatic-biliary-tract-cancers-a-single-center-experience
#11
I Park, Y S Kim, S J Sym, H K Ahn, K K Kim, Y H Park, J N Lee, D B Shin
PURPOSE: To assess efficacy or long-term result of metastasectomy for recurrent or metastatic biliary tract carcinoma (BTC), we conducted a retrospective review of the outcomes of metastasectomy for recurrent or metastatic BTCs, comprising intrahepatic cholangiocellular carcinoma (IHCCC), proximal and distal common bile duct cancer (pCBDC and dCBDC), gallbladder cancer (GBC), and ampulla of Vater cancer (AoVC). PATIENTS AND METHODS: The clinicopathological features and outcomes of BTC patients who underwent surgical resection for the primary and metastatic disease at the Gachon University Gil Medical Centre from 2003 to 2013 were reviewed retrospectively...
January 2017: Indian Journal of Cancer
https://www.readbyqxmd.com/read/29183311/successful-access-to-the-ampulla-for-endoscopic-retrograde-cholangiopancreatography-in-patients-with-situs-inversus-totalis-a-case-report
#12
Jung Min Lee, Jae Min Lee, Jong Jin Hyun, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yoon Tae Jeen, Hoon Jai Chun, Hong Sik Lee, Chang Duck Kim
BACKGROUND: Although various endoscopic techniques in situs inversus have been reported, endoscopic retrograde cholangiopancreatography (ERCP) in patients with situs inversus is always challenging even for an experienced endoscopist. We performed ERCP using two different techniques, and compare the merits of each technique. CASE PRESENTATION: A 74-year-old woman presented with epigastric pain and jaundice for 3 days. Computed tomography revealed diffuse dilatation of the biliary tree, with multiple intrahepatic duct and common bile duct (CBD) stones, in addition to situs inversus totalis...
November 28, 2017: BMC Surgery
https://www.readbyqxmd.com/read/29167218/concomitant-aids-cholangiopathy-and-fanconi-syndrome-as-complications-of-hiv-in-a-single-patient
#13
Robert Maweni, Jins Kallampallil, Szewai Leong, Srikanth Akunuri
We describe the case of a 50-year-old woman presenting to our acute medicine department with generalised non-specific symptoms on a background of HIV managed on triple therapy (tenofovir, lamivudine and zidovudine). On admission, she was noted to be acidotic with proteinuria, glycosuria, hypophosphataemia and generalised body pain, and was diagnosed with Fanconi's renotubular syndrome secondary to tenofovir. It was also noted that she had elevated liver dysfunction markers, and an MRI of the liver revealed a focal stricture near the ampulla of Vater, resulting in a diagnosis of AIDS cholangiopathy...
November 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29166817/ambiguities-in-the-taxonomic-assignment-and-species-delineation-of-botryllid-ascidians-from-the-israeli-mediterranean-and-other-coastlines
#14
Eitan Reem, Jacob Douek, Baruch Rinkevich
Based on mtCOI sequences comparisons, recent studies reassigned the 'dwarf Botrylloides leachii' from the Levant as Botrylloides nigrum. Here we conducted a survey of the literature and of deposited mtCOI sequences of botryllid ascidians, elucidating ambiguities in their taxonomy. We found that the species, dwarf morph of Botrylloides leachii, Botrylloides nigrum, Botryllus aster and Botryllus arenaceus are grouped together on a single molecular taxon. Then, results of three additional markers (18S, 28S, H3) contradicted literature suggestions, revealing minute distances between Botrylloides leachii and the 'dwarf Botrylloides leachii'...
November 22, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/29162771/in-vivo-evidence-for-possible-up-regulating-roles-of-lysophosphatidic-acid-around-fertilization-in-rats
#15
Tae Takeda, Miki Shirasaka, Makoto Sugiyama, Ryota Terashihma, Mitsumori Kawaminami, Shiro Kurusu
Lysophosphatidic acid (LPA) produced by autotaxin (ATX) is recognized as a multi-functional mediator in mammalian reproduction. This study focused on possible effect(s) of LPA on ovulated cumulus-oocyte complexes (COCs) around fertilization in rats in vivo. Immunohistochemistry revealed the cell-type-dependent localization of candidates of synthetic enzymes, ATX and two phospholipases A2 isofroms, and LPA receptors LPA1~4 in ovulated COCs and in oviductal epithelium. The eggs ovulated with a form of COCs became denuded of cumulus cells and underwent fragmentation in the absence of fertilization...
November 21, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29146469/percutaneous-transcystic-balloon-dilation-for-common-bile-duct-stone-removal-in-high-surgical-risk-patients-with-acute-cholecystitis-and-co-existing-choledocholithiasis
#16
Wujie Wang, Changjun Wang, Hongjun Qi, Yongzheng Wang, Yuliang Li
BACKGROUND: Percutaneous procedures to treat common bile duct (CBD) stones typically require access via intrahepatic bile ducts. This study aimed to describe the outcomes of a percutaneous transcystic approach that expelled the CBD stones into the duodenum after percutaneous transcystic balloon dilation of the ampulla (PTCBDA) for high-risk patients who present with acute cholecystitis and CBD stones. METHODS: Patients diagnosed with acute cholecystitis and CBD stones who were deemed too high-risk for surgery or general anesthesia and were treated with PTCBDA and CBD stone removal between March 2010 and November 2015 were included for further analysis...
November 13, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/29137005/bare-metal-stents-across-the-vater-s-ampulla-is-a-safe-method-for-patients-with-lower-bile-duct-obstruction
#17
Xiao-Nan Mao, Zai-Ming Lu, Feng Wen, Hong-Yuan Liang, Qi-Yong Guo
This study explored the effect of the implant position of stents across the Vater's ampulla on treatment outcomes in patients with lower bile duct obstruction.In the retrospective study, 41 patients with malignant obstruction of the lower bile duct and obstructive jaundice received percutaneous transhepatic biliary placement of bare-metal stents. Basic demographic data on patients, such as sex, age, and primary diseases, and follow-up data, including postoperative complications and jaundice-free survival, were recorded...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29134695/acute-stimulation-of-a-smooth-muscle-constrictor-by-oestradiol-17%C3%AE-via-gper1-in-bovine-oviducts
#18
T Nishie, Y Kobayashi, K Kimura, K Okuda
Oviducts play roles in reproductive processes, including gametes transport, fertilization and early embryo development. Oviductal transport is controlled by various factors such as endothelins (EDNs) and nitric oxide (NO), smooth muscle contracting and relaxing factor, respectively. EDNs and NO production depend on an ovarian steroid hormone, oestradiol-17β (E2) and E2 quickly exerts their biological functions through G protein-coupled oestrogen receptor 1 (GPER1), which mediates rapid intracellular signalling...
November 14, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29134136/creating-a-full-thickness-choroidal-incision-an-ex-vivo-analysis-of-human-and-porcine-tissue-contraction-dynamics
#19
Stephen A LoBue, Norihiro Yamada, Moon Jeong Choi, Timothy W Olsen
Purpose: We hypothesized that the elastic nature of the choroid leads to tissue contraction following a full-thickness, sharp incision. Furthermore, we sought to quantify, measure, and compare tissue contraction in ex vivo porcine globes and human globes of various ages using predetermined variables. Method: A full-thickness, ex vivo choroidal incision was performed in either pig (n = 97) or human (n = 30) specimens. Variables included trephine diameter (1.5, 2...
November 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29131967/prognostic-role-of-the-neutrophil-to-lymphocyte-ratio-nlr-in-patients-with-operable-ampullary-carcinoma
#20
Nebi Serkan Demirci, Gokmen Umut Erdem
Ampullary carcinoma or cancer of the ampulla of Vater is a rare malignancy with a high recurrence rate. Although cost-effective biomarkers, such as neutrophil-to-lymphocyte ratio (NLR), have been investigated in other cancers for predicting postoperative prognosis in patients, studies on the role of NLR in ampullary cancer are scarce. Here we aimed to evaluate the prognostic significance of the preoperative neutrophil-to-lymphocyte ratio (NLR) in patients with operable ampullary carcinoma. We retrospectively reviewed 87 patients who underwent pancreaticoduodenectomy for the treatment of ampullary carcinoma between December 1999 and April 2014...
November 13, 2017: Bosnian Journal of Basic Medical Sciences
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