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https://www.readbyqxmd.com/read/28925490/multi-detector-spiral-ct-diagnosis-of-common-bile-duct-ampullary-carcinoma
#1
D-Z Zhao, Y Guo, Y-P Sun, H-M Liu, Z Zhang, Q-L Ma, Y-S Wang, C-L Chen
OBJECTIVE: The aim of this project was to study the imaging characteristics of multi-detector CT (MDCT) in different types of malignant tumor in the common bile duct ampulla. PATIENTS AND METHODS: We examined 30 cases of pancreatic head cancer, 35 of terminal cholangiocarcinoma, 26 of ampullary carcinoma, and 40 of benign lesions, all confirmed by pathology. We used 64-slice spiral CT plain scan and multi-phase enhanced scan with multi-planar reconstruction (MPR) and curved planar reconstruction (CPR) post-processing to obtain three-dimensional images...
August 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28918475/octopaminergic-innervation-and-a-neurohaemal-release-site-in-the-antennal-heart-of-the-locust-schistocerca-gregaria
#2
Victoria Antemann, Günther Pass, Hans-Joachim Pflüger
A detailed account is given by the octopaminergic innervation of the antennal heart in Schistocerca gregaria using various immunohistochemical methods. Anterograde axonal filling illustrates the unilateral innervation on the medial ventral surface of the pumping muscle of the antennal heart via the paired corpora cardiaca nerve III. In addition, antibody staining revealed that ascending axons of this nerve terminate at the ampullae of the antennal heart forming synaptoid structures and extensive neurohaemal release sites...
September 16, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28915245/effects-of-gnrh-vaccination-in-wild-and-captive-african-elephant-bulls-loxodonta-africana-on-reproductive-organs-and-semen-quality
#3
Imke Lueders, Debbie Young, Liana Maree, Gerhard van der Horst, Ilse Luther, Stephan Botha, Brendan Tindall, Geoffrey Fosgate, André Ganswindt, Henk J Bertschinger
OBJECTIVES: Although the African elephant (Loxodonta africana) is classified as endangered by the International Union for Conservation of Nature (IUCN), in some isolated habitats in southern Africa, contraception is of major interest due to local overpopulation. GnRH vaccination has been promoted as a non-invasive contraceptive measure for population management of overabundant wildlife. We tested the efficacy of this treatment for fertility control in elephant bulls. METHODS: In total, 17 male African elephants that were treated with a GnRH vaccine were examined in two groups...
2017: PloS One
https://www.readbyqxmd.com/read/28900465/cytologic-features-of-tubular-adenoma-of-ampulla-causing-distal-common-bile-duct-stricture-a-case-report-and-review-of-the-literature
#4
Sangeeta Mantoo, Madhusudhan R Sanaka, Deborah J Chute
Adenomas of the ampulla of Vater are distinctly rare, representing <10% of periampullary neoplasms. Very few reports of the cytologic features of ampullary adenomas are present in literature, particularly in bile duct brushing samples. A case report and review of the literature is presented. The typical cytologic features of ampullary adenomas on cytologic preparations include tall, thin columnar cells with mildly hyperchromatic elongated nuclei and nuclear pseudostratification, in a relatively clean background...
2017: CytoJournal
https://www.readbyqxmd.com/read/28898595/hematological-analysis-of-the-ascidian-botrylloides-leachii-savigny-1816-during-whole-body-regeneration
#5
Simon Blanchoud, Lisa Zondag, Miles D Lamare, Megan J Wilson
Whole-body regeneration (WBR)-the formation of an entire adult from only a small fragment of its own tissue-is extremely rare among chordates. Exceptionally, in the colonial ascidian Botrylloides leachii (Savigny, 1816) a fully functional adult is formed from their common vascular system after ablation of all adults from the colony in just 10 d, thanks to their high blastogenetic potential. While previous studies have identified key genetic markers and morphological changes, no study has yet focused on the hematological aspects of regeneration despite the major involvement of the remaining vascular system and the contained hemocytes in this process...
June 2017: Biological Bulletin
https://www.readbyqxmd.com/read/28876573/hemosuccus-pancreaticus-from-ruptured-splenic-vein-pseudoaneurysm-secondary-to-necrotizing-pancreatitis-a-case-report
#6
M L Medina, C Saroca
Hemosuccus pancreaticus is a rare cause of gastrointestinal bleeding in which haemorrhage occurs from the ampulla of vater via the pancreatic duct, mostly from ruptured pseudoaneurysms. Our patient is a 25-year-old Filipino male who presented with intermittent epigastric pain associated with melena and decreasing haemoglobin despite multiple blood transfusions. EGD showed erythematous gastric and duodenal mucosa with no evidence of active bleeding. Whole abdominal CT scan with IV contrast showed diffusely prominent pancreas with areas of non-enhancement suggestive necrosis...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28876571/duodenectomy-managing-the-fistula
#7
M Govender, O Matsevych, F Ghoor, N Singh, C Molenaar
BACKGROUND: Duodenectomy is rarely indicated, however, in certain circumstances may have be performed. Enterocutaneous fistula (ECF) is the main cause of serious adverse outcomes. Its management remains challenging. METHOD: Two cases of emergency duodenectomy are presented. The management of ECF is described and discussed. RESULTS: Case 1: A 22-year-old male presented in septic shock with perforated duodenal ulcer, suffered two cardiac arrests before index surgery...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28868483/ampullary-metastasis-from-breast-cancer-a-rare-cause-of-obstructive-jaundice
#8
Sílvia Giestas, Sandra Lopes, Paulo Souto, Cláudia Agostinho, Ernestina Camacho, Maria Cipriano, Carlos Sofia
Breast cancer is the most common tumor in women and the first cause of death for malignancy in the female. Bile ducts are not among the common sites of metastasis from breast cancer. Few cases of obstructive jaundice due to metastatic breast cancer have been described in the literature and they mostly resulted from widespread liver metastases that eventually involved the bile ducts. We report an exceptional case of ampullary metastasis in the absence of liver metastases. Sporadic reports have been published about the involvement of the ampulla by breast cancer metastasis...
November 2016: GE Port J Gastroenterol
https://www.readbyqxmd.com/read/28846834/microanatomical-profiles-on-the-lymphatic-system-in-the-human-ampulla-of-vater-immunohistochemistry-and-scanning-electron-microscopy
#9
Takuji Kagiya, Hiroshi Shimoda, Hirokazu Narita, Tadashi Odagiri, Seiji Watanabe, Keinosuke Ishido, Daisuke Kudo, Norihisa Kimura, Taiichi Wakiya, Kenichi Hakamada
BACKGROUND: Little information has been available regarding microanatomy of lymphatic system in the ampulla of Vater, though it is of critical importance for an understanding of tumor progression via the lymphatics and determination of surgical strategy. The present study, therefore, aimed to demonstrate the distribution and microanatomical profiles on the lymphatic system in the ampulla. METHODS: The fine distribution and structure of the lymphatic vessels were investigated in the ampulla and the stomach by immunohistochemistry for lymphatic- (D2-40) and blood vascular- (CD31) specific markers and scanning electron microscopy...
August 28, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28842048/management-of-duodenal-polyps
#10
REVIEW
Michael X Ma, Michael J Bourke
Duodenal adenomas are the most common type of polyp arising from the duodenum. These adenomas can occur within and outside of genetic syndromes, and are broadly classified as non-ampullary or ampullary depending on their location. All adenomas have malignant potential and are therefore appropriately treated by endoscopic resection. However, the unique anatomical properties of the duodenum, namely its relatively thin and vascular walls, narrow luminal diameter and relationship to the ampulla and its associated pancreatic and biliary drainage, pose an increased degree of complexity for any endoscopic interventions in this area...
August 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28836519/direct-puncture-of-the-ampulla-as-a-modified-endoscopic-ultrasound-guided-rendezvous-technique
#11
Kazumichi Kawakubo, Masaki Kuwatani, Shin Kato, Ryo Sugiura, Itsuki Sano, Naoya Sakamoto
No abstract text is available yet for this article.
August 24, 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28830629/expression-of-bone-morphogenetic-protein-receptors-in-bovine-oviductal-epithelial-cells-evidence-of-autocrine-bmp-signaling
#12
Pablo Alberto Valdecantos, Rocío Del Carmen Bravo Miana, Elina Vanesa García, Daniela Celeste García, Mariela Roldán-Olarte, Dora Cristina Miceli
Members of the transforming growth factor beta (TGF-β) family, including bone morphogenetic proteins (BMPs), are expressed in the epithelial cells of the mammalian oviduct. These signaling molecules play important roles in development and tissue homeostasis; however, little is known about their function in the mammalian oviduct. In the present study, RT-qPCR was used to analyze the mRNA abundance of BMP type I (BMPR1A, BMPR1B, ACVR1) and type II receptors (BMPR2, ACVR2A, ACVR2B) in the bovine oviduct epithelial cells (BOEC) isolated from ampulla and isthmus at both the follicular (FP) and the luteal (LP) phase of the estrous cycle...
October 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28797911/a-prospective-evaluation-of-radiation-free-direct-solitary-cholangioscopy-for-the-management-of-choledocholithiasis
#13
Monique T Barakat, Mohit Girotra, Abhishek Choudhary, Robert J Huang, Saurabh Sethi, Subhas Banerjee
BACKGROUND AND AIMS: Endoscopy has replaced many radiological studies for the GI tract. However, ERCP remains a hybrid endoscopic-fluoroscopic procedure, which limits its portable delivery, creates delays due to fluoroscopy room unavailability and exposes patients/providers to radiation. We evaluated fluoroscopy/radiation-free management of patients with non-complex choledocholithiasis using direct solitary cholangioscopy (DSC). METHODS: Patients underwent fluoroscopy-free biliary cannulation, sphincterotomy then cholangioscopy to establish location, number/size of stones and document distance from ampulla to bifurcation to guide balloon advancement...
August 7, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28795998/paraduodenal-pancreatitis-imaging-and-pathologic-correlation-of-47-cases-elucidates-distinct-subtypes-and-the-factors-involved-in-its-etiopathogenesis
#14
Takashi Muraki, Grace E Kim, Michelle D Reid, Pardeep Mittal, Gabriela Bedolla, Bahar Memis, Burcin Pehlivanoglu, Alexa Freedman, Ipek Erbarut Seven, Hyejeong Choi, David Kooby, Shishir K Maithel, Juan M Sarmiento, Alyssa Krasinskas, Volkan Adsay
Clinicopathologic characteristics of paraduodenal (groove) pancreatitis (PDP) remain to be fully unraveled. In this study, 47 PDPs with preoperative enhanced images available were subjected to detailed comparative analysis in conjunction with pathologic findings. PDP were predominantly in males (3:1) with a mean age of 50 years, and 60% had a preoperative diagnosis of cancer. Mean lesional size was 3.1 cm. Three distinct subtypes were identified by imaging. Solid-tumoral (type-1) with groove-predominant (type-1A, 36%) forming a distinct solid band between the duodenum and pancreas often with histologic microabscesses (69% vs...
October 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28770380/sex-steroids-modulate-morphological-and-functional-features-of-the-bovine-oviduct
#15
Angela Maria Gonella-Diaza, Fernando Silveira Mesquita, Kauê Ribeiro da Silva, Júlio Cesar de Carvalho Balieiro, Nilton Pedro Dos Santos, Guilherme Pugliesi, Ricardo de Francisco Strefezzi, Mario Binelli
In cattle, the oviduct plays a major role in the reproductive process; however, molecular control of oviduct receptivity to the embryo is poorly understood. A model for receptivity based on size of the pre-ovulatory follicle (POF) was used to compare oviductal morphology, cellular proliferation, and candidate transcript abundance. Growth of the POF of Nelore (Bos indicus) cows was manipulated to produce two groups: a large POF-large corpus luteum (CL) group (LF-LCL; greater receptivity) and a small POF-small CL group (SF-SCL)...
August 2, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28763696/long-term-observation-and-treatment-of-a-widespread-intraductal-papillary-neoplasm-of-the-bile-duct-extending-from-the-intrapancreatic-bile-duct-to-the-bilateral-intrahepatic-bile-duct-a-case-report
#16
Daisuke Hokuto, Takeo Nomi, Satoshi Yasuda, Takahiro Yoshikawa, Kohei Ishioka, Takatsugu Yamada, Takahiro Akahori, Kenji Nakagawa, Minako Nagai, Kota Nakamura, Shinsaku Obara, Hiromichi Kanehiro, Masayuki Sho
INTRODUCTION: Few studies have reported the long-term outcomes of surgical resected intraductal papillary neoplasm of the bile duct (IPNB). Here, we describe the long-term observation and treatment of a case of widespread IPNB. PRESENTATION OF CASE: A 57-year-old male was referred to our hospital due to jaundice and dilation of the intrahepatic bile duct. Computed tomography showed dilation and irregularities of the right intrahepatic and extrahepatic bile ducts together with a 3cm nodule in the common hepatic duct...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28757032/incidence-of-postoperative-implant-related-bacterial-endocarditis-in-dogs-that-underwent-trans-catheter-embolization-of-a-patent-ductus-arteriosus-without-intra-and-post-procedural-prophylactic-antibiotics
#17
Viktor Szatmári
Intra- and post-procedural prophylactic antibiotics are routinely administered by veterinary cardiologists to dogs that undergo trans-catheter embolization of a patent ductus arteriosus for prevention of implant-related infective endocarditis. The hypothesis of our study was that primary antibiotic prophylaxis is not necessary to prevent bacterial endocarditis. In this retrospective case series 54 client-owned dogs that underwent trans-catheter occlusion of a patent ductus arteriosus in a single tertiary veterinary referral center between 2004 and 2016 were evaluated...
August 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28753494/ovarian-steroids-oxytocin-and-tumor-necrosis-factor-modulate-equine-oviduct-function
#18
P Pinto-Bravo, A Galvão, M R Rebordão, A Amaral, D Ramilo, E Silva, A Szóstek-Mioduchowska, G Alexandre-Pires, R Roberto da Costa, D J Skarzynski, G Ferreira-Dias
The oviduct plays important roles in the early reproductive process. The aim of this study was to evaluate gene transcription and protein expression of progesterone receptor (PGR), estrogen receptors 1 (ESR1) and 2 (ESR2); oxytocin receptor (OXTR); prostaglandin F2α synthase (AKR1C3), and prostaglandin E2 synthase (Ptges) in mare oviduct in different estrous cycle stages. Estradiol (E2), progesterone (P4), oxytocin (OXT), and tumor necrosis factor α (TNF) effect on in vitro PGE2 and prostaglandin F2α (PGF2α) secretion by equine oviduct explants or by oviductal epithelial cells (OECs) were also assessed...
June 24, 2017: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/28738955/primary-site-predicts-grade-for-gastroenteropancreatic-neuroendocrine-tumors
#19
Timothy L Fitzgerald, Catalina Mosquera, C Suzanne Lea, Matthew McMullen
Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) are rare and abstruse neoplasms with increasing incidence and clinical relevance. The National Cancer Data Base was examined to identify GEP-NET cases from 2004 to 2013. In total, 39,454 patients diagnosed with GEP-NET were identified. Median age was 61 years. Majority was female (50.13%), white (79.49%), and had low-grade neoplasms (84.39%). On univariate analysis, age, sex, race, primary site, tumor size, and regional lymph node involvement were associated with tumor grade (P < 0...
July 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28728589/occurrence-of-strongyloidiasis-in-privately-owned-and-sheltered-dogs-clinical-presentation-and-treatment-outcome
#20
Paola Paradies, Fabrizio Iarussi, Mariateresa Sasanelli, Antonio Capogna, Riccardo Paolo Lia, Daniele Zucca, Beatrice Greco, Cinzia Cantacessi, Domenico Otranto
BACKGROUND: The increasing number of reports of human infections by Strongyloides stercoralis from a range of European countries over the last 20 years has spurred the interest of the scientific community towards this parasite and, in particular, towards the role that infections of canine hosts may play in the epidemiology of human disease. Data on the epidemiology of canine strongyloidiasis is currently limited, most likely because of the inherent limitations of current diagnostic methods...
July 20, 2017: Parasites & Vectors
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