Results 61 to 70 of about 16,609 (215)

Gastric Foveolar‐Type Hyperplastic Polyp of the Duodenum With GNAS and KRAS Mutations: A Potential Precursor to Neoplasia

DEN Open, Volume 6, Issue 1, April 2026.
ABSTRACT We report a gastric foveolar‐type hyperplastic polyp of the duodenum harboring mutations in the GNAS and KRAS genes. The lesion was incidentally detected during a routine upper gastrointestinal endoscopy in a man in his 50s. It appeared as a 10‐mm elevated lesion located at the superior duodenal angle.
Kenji Yamazaki, Ryoji Kushima, Noritaka Ozawa, Haruka Koizumi, Saeka Hayashi, Atsushi Soga, Koji Yamashita, Shogo Shimizu, Masahito Shimizu   +8 more
wiley   +1 more source

Case Report: Late simultaneous metastasis of renal clear cell carcinoma to the ampulla and breast

Frontiers in Oncology
We present the case of a 67-year-old female who developed simultaneous metastases to the ampulla of Vater and the breast. Her medical history is significant for a radical nephrectomy performed twenty-one years prior for renal cell carcinoma (RCC).
Guofeng Dai, Shuya Li, Lei Sun, Gangpu Wang   +3 more
doaj   +1 more source

Acute pancreatitis caused by a duodenal duplication cyst covering the ampulla of Vater

Journal of Pediatric Surgery Case Reports, 2018
Duodenal duplication cyst is not a common congenital anomaly and the pathophysiology may become very complicated if the cyst is situated at the ampulla of Vater. Here we report a very rare female case of duodenal duplication cyst at the ampulla of Vater,
Katsuhiro Ogawa, Yutaka Kanamori, Toshihiko Watanabe, Kotaro Tomonaga, Mai Kutsukake, Michiko Goto, Michinobu Ohno, Kazunori Tahara, Tomoro Hishiki, Akihiro Fujino   +9 more
doaj   +1 more source

Diagnostic Performance of Magnifying Endoscopy With Crystal Violet Staining for Superficial Non‐ampullary Duodenal Epithelial Tumors: A Single‐center Prospective Study

DEN Open, Volume 6, Issue 1, April 2026.
ABSTRACT Objectives We previously reported a potential diagnostic algorithm for superficial non‐ampullary duodenal epithelial tumors (SNADETs) using white‐light magnifying endoscopy with crystal violet staining (ME‐CV). This study aimed to determine the diagnostic performance of the scheme and compare it with the conventional white‐light endoscopy (WLE)
Tomo Kumei, Yosuke Toya, Shun Yamada, Makoto Eizuka, Shunichi Yanai, Masaki Endo, Ryo Sugimoto, Noriyuki Uesugi, Tamotsu Sugai, Naoki Yanagawa, Fumiaki Takahashi, Takayuki Matsumoto   +11 more
wiley   +1 more source

Troubleshooting of Endoscopic Ultrasound‐guided Rendezvous Using a Nasobiliary Drainage Tube

DEN Open, Volume 6, Issue 1, April 2026.
ABSTRACT Endoscopic ultrasound‐guided rendezvous (EUS‐RV) is an alternative technique for patients in whom selective bile duct cannulation (SBDC) has failed during endoscopic retrograde cholangiopancreatography (ERCP). However, EUS‐RV has several challenging steps.
Tomohiro Yamazaki, Kenji Nakamura, Yuichiro Suzuki, Yuntae Kim, Shuhei Okuyama, Koichi Takagi, Katsuyuki Fukuda   +6 more
wiley   +1 more source

Adenoma viloso da ampola de Vater

Revista do Colégio Brasileiro de Cirurgiões
The aim of this paper is to present a case of a 37-year-old female patient with a benign tumor of the Ampulla of Vater and a brief review of the literature.
Julio Cesar Wiederkehr, Julio Cezar Uili Coelho, Marcos Fabiano Sigwalt, Aissar Eduardo Nassif   +3 more
doaj   +1 more source

Complete Resection of Ampullary Paragangliomas Confined to the Submucosa on Endoscopic Ultrasound May Be Best Achieved by Radical Surgical Resection

Case Reports in Gastroenterology, 2009
Paragangliomas of the gastrointestinal tract generally are benign tumors usually found in the second portion of the duodenum. We present a case of paraganglioma of the ampulla of Vater confined to the submucosa on endoscopic ultrasound examination.
Kevin A. Ghassemi, Galen Cortina, Howard A. Reber, James J. Farrell   +3 more
doaj   +1 more source

Calpain system protein expression in carcinomas of the pancreas, bile duct and ampulla [PDF]

, 2012
Background: Pancreatic cancer, including cancer of the ampulla of Vater and bile duct, is very aggressive and has a poor five year survival rate; improved methods of patient stratification are required. Methods: We assessed the expression of calpain-1,
A Glading, A Jemal, Abed M Zaitoun, Arvind Arora, C Schafer, DE Goll, Dileep N Lobo, E Costello, G Parnaud, H Weber, I Goncalves, J Cong, J Valle, Lindy G Durrant, LM McShane, ME Valsecchi, P Ghaneh, PY Fong, R Stifanese, RA Hanna, RA Smith, RL Camp, RW Neumar, S Imajoh, S Li, Sarah J Storr, SJ Storr, SJ Storr, SJ Storr, Srinivasan Madhusudan, Stewart G Martin, T Kumamoto, T Moldoveanu   +32 more
core   +3 more sources

A case of distal extrahepatic cholangiocarcinoma with two positive resection margins [PDF]

, 2016
Cholangiocarcinoma is an uncommon primary malignancy of the biliary tract that is challenging to diagnose and treat effectively due to its relatively silent and late clinical presentation.
Andersen, Anderson, Brandi, Brandi, Chung, Dave Harnanan, Ebata, El Rassi, Esposito, Farhat, Geynisman, Han, Hong, Ito, Jarnagin, Khan, Kitagawa, Klöppel, Lazaridis, Murakami, Murakami, Nakeeb, Nuzzo, Parkin, Pitt, Ravi Maharaj, Razumilava, Reddy, Rizvi, Roach, Sasaki, Serafini, Shaib, Soares, Srikanth Umakanthan, Steiner, Wayne A. Warner, Welzel, Wesley Ramcharan, Woo, Yamamoto, Yoshida, Yoshida   +42 more
core   +2 more sources

Migration of Fish Bones to the Bile Duct Following Hepaticojejunostomy

DEN Open, Volume 6, Issue 1, April 2026.
ABSTRACT Objectives Migration of fish bones into the bile duct is rare, but can cause bile duct stone formation or acute cholangitis. Herein, we examine the characteristics of this phenomenon. Methods This single‐center, retrospective study enrolled patients with a history of fish bone extraction from the bile duct by an endoscopic procedure at our ...
Kenta Yoshida, Tsuyoshi Hayashi, Kazuki Hama, Ryo Ando, Haruka Toyonaga, Tatsuya Ishii, Toshifumi Kin, Masayo Motoya, Kuniyuki Takahashi, Yuko Omori, Satoshi Ota, Akio Katanuma   +11 more
wiley   +1 more source