Koh Kitagawa, MD, PhD, Assistant Professor, Department of Gastroenterology, Nara Medical University, Kashihara 634-8522, Nara, Japan. (Publication) Kitagawa K, Asada S, Hanatani JI, Motokawa Y, Osaki Y, Iwata T, Kaji K, Mitoro A, Yoshiji H. Clinical Outcomes After Endoscopic Retrograde Cholangiopancreatography Using Balloon-Assisted Enteroscopy for Benign Anastomotic Stricture of Choledochojejunostomy: A Retrospective Study. Surg Tech Dev. 2025, 14, 24. Kitagawa K, Motokawa Y, Yoshiji H. Endoscopic Balloon Dilation Using a Novel Nonslip Balloon Catheter in a Patient With Pancreaticojejunal Anastomotic Stricture. Dig Endosc. 2025, Ahead of print. Kitagawa K, Osaki Yui, Yoshiji H. Accidental portal vein cannulation by the use of an uneven double-lumen cannula during double-balloon enteroscopy-assisted endoscopic retrograde cholangiopancreatography with video. Dig Endosc. 2025, Ahead of print. Kitagawa K, Mitoro A, Suzuki H, Tomooka F, Asada S, Hanatani JI, Motokawa Y, Iwata T, Osaki Y, Takeda M, Yoshiji H. Role of Liquid-Based Cytology in the Endoscopic Diagnosis of Pancreatic Ductal Adenocarcinoma. J Clin Med. 2024,13,6148. Tomooka F, Kitagawa K, Mitoro A, Fujinaga Y, Nishimura N, Namisaki T, Akahane T, Kaji K, Asada S, Sato S, Hanatani JI, Mori H, Motokawa Y, Iwata T, Kachi H, Osaki Y, Yoshiji H. Unilateral drainage and chemotherapy prolong the patency of a plastic stent placed above the sphincter of Oddi in patients with malignant hilar biliary obstruction. DEN Open. 2024 Jul 15;5(1):e404. Hanatani JI, Kitagawa K, Tomooka F, Asada S, Mitoro A, Fujinaga Y, Nishimura N, Sato S, Shibamoto A, Fujimoto Y, Kubo T, Iwai S, Tsuji Y, Namisaki T, Akahane T, Kaji K, Tanaka M, Koizumi A, Yorioka N, Matsuda T, Masuda H, Takami M,Kikuchi M, Kawanishi M, Ohoka K, Watanabe D, Kawasaki A, Yoshiji H. Impact of the COVID-19 pandemic on the treatment of acute cholangitis caused by choledocholithiasis: A single-center retrospective study in Japan. DEN Open.2024 Apr 30;5(1):e371. Kitagawa K, Oyama M, Asada S, Sato S, Nakatani T, Nishimura N, Mui Y,Hanatani JI, Takeda M, Yoshiji H. Methotrexate-associated lymphoproliferative disorder: A rare pancreatic tumor diagnosed via endoscopic ultrasound-guided fine-needle biopsy. DEN Open. 2024 Mar 5;4(1):e346. Kitagawa K, Tomooka F, Yoshiji H. Efficacy of a novel covered metallic stent with side holes for malignant anastomotic stenosis of choledochojejunostomy. Dig Endosc.2024 May;36(5):628-630. Asada S, Kitagawa K, Yoshiji H. Efficacy of the novel guide sheath system for removing a migrated pancreatic duct stent after pancreaticoduodenectomy. Dig Endosc. 2024 Feb;36(2):228-229. Tomooka F, Kitagawa K, Mitoro A, Motokawa Y, Takami M, Asada S, Nishimura N, Ozutsumi T, Fujinaga Y, Yoshiji H. Complete migration of a fully covered self-expandable metallic stent after endoscopic ultrasound-guided hepaticogastrostomy: A case report. SAGE Open Med Case Rep. 2023 Sep 12;11:2050313X231200290 Kitagawa K, Masuda H, Mitoro A, Tomooka F, Asada S, Nishimura N, Kaji K, Yoshiji H. Black esophagus: a life-threatening adverse event associated with endoscopic retrograde cholangiopancreatography. Clin Endosc. 2024 Mar;57(2):270-273. Kitagawa K, Sho M, Yoshiji H. Severe biliary peritonitis following endoscopic ultrasound-guided hepaticogastrostomy combined with antegrade stenting. Dig Endosc. 2023 Jul;35(5):671. Kitagawa K, Mitoro A, Tomooka F, Asada S, Fujinaga Y, Nishimura N, Yoshiji H. Efficacy of short-bending sphincterotome for difficult biliary cannulation in double-balloon enteroscopy-assisted ERCP. Endoscopy. 2023 Dec;55(S01):E392-E393. Kitagawa K, Mitoro A, Tomooka F, Asada S, Fujinaga Y, Nishimura N, Kaji K, Kawaratani H, Akahane T, Ozutsumi T, Kaneko M, Fujimoto Y, Tsuji Y, Enomoto M, Takeda S, Murata K, Kubo T, Iwai S, Koizumi A, Shibamoto A, Suzuki J, Tanaka M, Matsuda T, Yorioka N, Masuda H, Takami M, Yoshiji H. Diagnostic yield of liquid-based cytology in serial pancreatic juice aspiration cytological examination. DEN Open. 2022 Oct 25;3(1):e177. Kitagawa K, Mitoro A, Minami R, Nagamatsu S, Ozutsumi T, Fujinaga Y, Nishimura N, Sawada Y, Namisaki T, Akahane T, Kaji K, Tomooka F, Asada S, Kaneko M, Yoshiji H. Efficacy of a dedicated plastic stent in endoscopic ultrasound-guided hepaticogastrostomy during the learning curve: cumulative multi-center experience. Scand J Gastroenterol. 2023 Mar;58(3):296-303. Kitagawa K, Mitoro A, Yoshiji H. Parallel method for a safe endoscopic ultrasound-guided antegrade stenting using an uneven double lumen cannula. Dig Endosc. 2022 Sep;34(6):1262. doi: 10.1111/den.14403. Kitagawa K, Mitoro A, Ozutsumi T, Furukawa M, Fujinaga Y, Seki K, Nishimura N, Sawada Y, Kaji K, Kawaratani H, Takaya H, Moriya K, Namisaki T, Akahane T, Yoshiji H. Laser-cut-type versus braided-type covered self-expandable metallic stents for distal biliary obstruction caused by pancreatic carcinoma: a retrospective comparative cohort study. Clin Endosc. 2022 May;55(3):434-442. Kitagawa K, Mitoro A, Ozutsumi T, Furukawa M, Fujinaga Y, Nishimura N, Sawada Y, Namisaki T, Akahane T, Yoshiji H. Comparison of the efficacy and safety between palliative biliary stent placement and duct clearance among elderly patients with choledocholithiasis: a propensity score-matched analysis. BMC Gastroenterol. 2021 Oct 10;21(1):369. Kitagawa K, Moriya K, Kaji K, Saikawa S, Sato S, Nishimura N, Namisaki T, Akahane T, Mitoro A, Yoshiji H. Atorvastatin Augments Gemcitabine-Mediated Anti- Cancer Effects by Inhibiting Yes-Associated Protein in Human Cholangiocarcinoma Cells. Int J Mol Sci. 2020 Oct 14;21(20):7588. Kitagawa K, Katanuma A, Yane K, Kin T, Maguchi H. Tornado effect: accidental removal of a biliary metallic stent on winding around a stent retriever. Gastrointest Endosc. 2016 Jun;83(6):1289-90.