Masayuki Ohta

Oita University — Japan

Medicine · Health Sciences

44h-index6.7kcitations336works1.32yr avg
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Research Topics

Liver Disease and Transplantation(59), Bariatric Surgery and Outcomes(49), Pancreatic and Hepatic Oncology Research(44), Liver Disease Diagnosis and Treatment(38), Hepatocellular Carcinoma Treatment and Prognosis(35)

Publications336 total

Japanese nationwide surveys on bariatric/metabolic procedures in 2021–2024
Surgery Today·2025
Staple line leakage after laparoscopic sleeve gastrectomy in Japan: a nationwide survey
Surgery Today·2025· 1 cited
Clinical characteristics of coronavirus disease 2019 in patients undergoing laparoscopic bariatric/metabolic surgery: a nationwide survey in Japan
Surgery Today·2024· 3 cited
Guidelines for the diagnosis and treatment of idiopathic portal hypertension, extrahepatic portal obstruction, and Budd–Chiari syndrome in Japan
Hepatology Research·2024· 4 citedOpen Access
Correction: Ectopic bile duct concomitant with gastric ulcer hemorrhage: report of a case
Surgical Case Reports·2024Open Access
Ectopic bile duct concomitant with gastric ulcer hemorrhage: report of a case
Surgical Case Reports·2024· 1 citedOpen Access
Safety and effectiveness of SARS‐CoV‐2 vaccines for patients with intractable hepatobiliary diseases: A multicenter, questionnaire‐based, cross‐sectional study
Hepatology Research·2024
Apoptosis-related factors are relevant to progression of pancreatic neuroendocrine tumors
World Journal of Surgical Oncology·2023Open Access
Appropriate indications for laparoscopic repeat hepatectomy
BMC Surgery·2023· 1 citedOpen Access
Apoptosis-related factors are relevant to progression of pancreatic neuroendocrine neoplasms
Research Square (Research Square)·2023Open Access
Technical and oncological safety of pancreatectomy for pancreatic cancer in older adults aged over 75 years versus younger adults: A single‐center retrospective cohort study
Geriatrics and gerontology international/Geriatrics & gerontology international·2023· 3 citedOpen Access
Clinical significance of colonoscopy before laparoscopic bariatric/metabolic surgery in Japanese patients
Surgery Today·2023· 1 cited
Glucose metabolic upregulation via phosphorylation of S6 ribosomal protein affects tumor progression in distal cholangiocarcinoma
BMC Gastroenterology·2023· 5 citedOpen Access
Appropriate indications for laparoscopic repeat hepatectomy
Research Square (Research Square)·2023Open Access
Factors Associated with Relapse of Type 2 Diabetes Mellitus after Laparoscopic Sleeve Gastrectomy in Japanese Subjects: A Subgroup Analysis of J-SMART Study
Obesity Facts·2023· 9 citedOpen Access
T2 gallbladder carcinoma: Clinicopathological features and optimal surgical strategies
Research Square (Research Square)·2022Open Access
Encouraging Young Pediatric Surgeons and Evaluation of the Effectiveness of a Pediatric Endosurgery Workshop by Self-Assessment and an Objective Skill Validation System
Journal of Laparoendoscopic & Advanced Surgical Techniques·2022· 3 cited
Correction: Conjunctivitis, the key clinical characteristic of adult rubella in Japan during two large outbreaks, 2012–2013 and 2018–2019
PLoS ONE·2022Open Access
Pancreas-preserving partial duodenectomy for non-ampullary duodenal neoplasms: three case reports
Surgical Case Reports·2022· 2 citedOpen Access
Ten Years of Change in Bariatric/Metabolic Surgery in the Asia–Pacific Region with COVID-19 Pandemic: IFSO-APC National Reports 2021
Obesity Surgery·2022· 21 citedOpen Access
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Frequent Co-authors

Seigo Kitano(26), Kohei Shibata(19), Atsushi Sasaki(17), Makoto Hashizume(11), Keizō Sugimachi(11), Kentaro Iwaki(9), Morimasa Tomikawa(9), Toshifumi Matsumoto(9), Yukio Iwashita(8), Seiichiro Kai(7), Kazuo Tanoue(7), Hiroki Uchida(6), Kazuhiro Yada(6), K Sugimachi(4), Yuichi Endo(4), S. Kai(4), Kiichiro Ueno(4), Hidefumi Higashi(4), Seitaro Hirano(3), Masaki Mori(3)