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DEN Open|January 8, 2026
Simultaneous Placement of Three Thin-Delivery Multi-Hole Self-Expandable Metallic Stents for Malignant Hilar Biliary Obstruction Using a Large-Channel DuodenoscopeAkinobu Koiwai, Morihisa Hirota, Tomohiro Oikawa, et al.
Internal Medicine (Tokyo, Japan)|July 28, 2020
A Biliary Mucinous Cystic Neoplasm with Intrahepatic and Lymph Node MetastasesAkinobu Koiwai, Takayuki Kogure, Mari Satoh, et al.
Internal Medicine (Tokyo, Japan)|May 6, 2026
Applying Artificial Intelligence Technologies to Detect Pancreatic Ductal Adenocarcinoma Using Routine Laboratory Tests: A Pilot Study with the Aid of Machine Learning Suitable for a Small Data AnalysisAkinobu Koiwai, Morihisa Hirota, Kenichi Sato, et al.
JGH Open : an Open Access Journal of Gastroenterology and Hepatology|June 26, 2023
Diffuse pancreatic parenchymal atrophy, an imaging finding predictive of the development of pancreatic ductal adenocarcinoma: A case-control studyAkinobu Koiwai, Morihisa Hirota, Tomonori Matsuura, et al.
Internal Medicine (Tokyo, Japan)|November 16, 2020
Presymptomatic Crohn's Disease in a Young Patient Diagnosed Just After the Onset of Idiopathic Acute PancreatitisKatsuya Endo, Morihisa Hirota, Yoshiteru Sasaki, et al.
Case Reports in Gastroenterology|July 17, 2024
Peribiliary Gland Hyperplasia That Required Differentiation from Extrahepatic Bile Duct Cancer: A Case ReportKazuhiro Takami, Kuniharu Yamamoto, Hiroto Sakurai, et al.
DEN Open|March 31, 2023
Direct peroral cholangioscopy with red dichromatic imaging 3 detected the perihilar margin of superficial papillary extension in a patient with intraductal papillary neoplasm of the bile ductAkinobu Koiwai, Morihisa Hirota, Keigo Murakami, et al.
Internal Medicine (Tokyo, Japan)|May 8, 2022
Neutrophil Infiltration and Acinar-ductal Metaplasia Are the Main Pathological Findings in Pembrolizumab-induced PancreatitisMorihisa Hirota, Keigo Murakami, Akinobu Koiwai, et al.
Digestive Endoscopy : Official Journal of the Japan Gastroenterological Endoscopy Society|November 3, 2023
Postprocedure serum amylase or lipase levels predict postendoscopic retrograde cholangiopancreatography pancreatitis: Meta-analysis of diagnostic test accuracy studies and utility assessmentMorihisa Hirota, Takao Itoi, Toshio Morizane, et al.
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