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  1. Article

    Open Access

    Hepatopancreatoduodenectomy with delayed division of the pancreatic parenchyma when utilizing a right lateral approach to the superior mesenteric artery

    Hepatopancreatoduodenectomy (HPD) is a high-risk surgical procedure. Delayed division of the pancreatic parenchyma (DDPP) was reported as a novel technique in HPD for reducing postoperative pancreatic fistula....

    Aoi Hayasaki, Naohisa Kuriyama, Benson Kaluba, Tatsuya Sakamoto in Surgical Case Reports (2024)

  2. Article

    Open Access

    Laparoscopic left hepatectomy for a patient with an absence of portal bifurcation using real-time imaging: a case report

    Absence of portal bifurcation is an extremely rare anomaly that should be recognized preoperatively, especially prior to a major hepatectomy.

    Shugo Mizuno, Yusuke Iizawa, Akihiro Tanemura, Benson Kaluba in Surgical Case Reports (2024)

  3. No Access

    Article

    Radiomics-based prediction of nonalcoholic fatty liver disease following pancreatoduodenectomy

    Predicting nonalcoholic fatty liver disease (NAFLD) following pancreaticoduodenectomy (PD) is challenging, which delays therapeutic intervention and makes its prevention difficult. We conducted this study to a...

    Takehiro Fujii, Yusuke Iizawa, Takumi Kobayashi, Aoi Hayasaki in Surgery Today (2024)

  4. No Access

    Article

    Choledochocele with hyperplastic epithelium in a patient who developed severe acute pancreatitis and underwent subtotal stomach-preserving pancreatoduodenectomy: a case report

    Choledochocele is defined as a congenital dilatation of the distal intramural part of the common bile duct protruding into the wall of the descending duodenum, typically without pancreaticobiliary maljunction....

    Aoi Hayasaki, Akihiro Tanemura, Katsunori Uchida in Clinical Journal of Gastroenterology (2024)

  5. No Access

    Article

    Impact of radiological and pathological splenic vein involvement in patients with resectable pancreatic body or tail cancer

    Several studies have reported a negative impact on survival associated with splenic vessel involvement, especially splenic artery (SpA) involvement, in patients diagnosed with pancreatic body or tail cancer. H...

    Naohisa Kuriyama, Shugo Mizuno, Tatsuya Sakamoto in Langenbeck's Archives of Surgery (2024)

  6. No Access

    Article

    Spleen volume is a predictor of posthepatectomy liver failure and short-term mortality for hepatocellular carcinoma

    The study aimed at retrospectively assessing the impact of spleen volume (SpV) on the development of posthepatectomy liver failure (PHLF) in patients who underwent hepatectomy for hepatocellular carcinoma (HCC).

    Takahiro Ito, Akihiro Tanemura, Toru Kuramitsu in Langenbeck's Archives of Surgery (2023)

  7. No Access

    Article

    Anterior versus posterior radical antegrade modular pancreatosplenectomy for pancreatic body and tail cancer: an inverse probability of treatment weighting with survival analysis

    Radical antegrade modular pancreatosplenectomy (RAMPS) is a standard procedure for patients with pancreatic body and tail cancer. There are two types of RAMPS: anterior and posterior, but their indications and...

    Naohisa Kuriyama, Koki Maeda, Toru Shinkai, Takahiro Ito, Kazuyuki Gyoten in Surgery Today (2023)

  8. No Access

    Article

    Surgical outcomes of the Frey procedure for chronic pancreatitis: correlation between preoperative characteristics and the histological severity of pancreatic fibrosis

    To evaluate the efficacy of the Frey procedure and clarify the relationship between preoperative characteristics and the histological severity of chronic pancreatitis (CP).

    Akihiro Tanemura, Akinobu Hayashi, Koki Maeda, Toru Shinkai, Takahiro Ito in Surgery Today (2023)

  9. No Access

    Article

    Safety and efficacy of neoadjuvant chemotherapy based on our resectability criteria for locally advanced perihilar cholangiocarcinoma

    Neoadjuvant chemotherapy (NAC) is not commonly used for perihilar cholangiocarcinoma (PHC). This study evaluated the safety and efficacy of NAC for PHC.

    Kazuyuki Gyoten, Naohisa Kuriyama, Koki Maeda in Langenbeck's Archives of Surgery (2023)

  10. No Access

    Article

    Biliary obstruction caused by plant seeds

    Biliary obstruction is rarely caused by foreign objects; therefore, the precise diagnosis may be challenging. Even in rare situations, cases of biliary obstruction caused by plant seeds have not been reported ...

    Kazuyuki Gyoten, Naohisa Kuriyama, Akinobu Hayashi in Clinical Journal of Gastroenterology (2022)

  11. No Access

    Article

    Resection type is a predictor of postoperative complications in laparoscopic partial liver resection

    Partial laparoscopic liver resection (LLR) is a procedure that can have varying levels of surgical difficulty depending on the tumor status and procedure. Therefore, we aimed to evaluate the surgical outcomes ...

    Akihiro Tanemura, Shugo Mizuno, Koki Maeda, Toru Shinkai in Surgical Endoscopy (2022)

  12. No Access

    Article

    Safety and benefits of major hepatectomy with extrahepatic bile duct resection in older perihilar cholangiocarcinoma patients

    To evaluate the safety and benefits of major hepatectomy with extrahepatic bile duct resection in older perihilar cholangiocarcinoma patients and to identify possible predictors of surgical mortality.

    Koki Maeda, Naohisa Kuriyama, Takahiro Ito in Langenbeck's Archives of Surgery (2022)

  13. Article

    Open Access

    Microcystic serous cystadenoma mimicking pancreatic neuroendocrine neoplasm: report of a resected case with preoperative diagnostic difficulty and review of the literature

    Microcystic pancreatic serous cystadenoma (SCA) can be managed without surgery in selected patients. However, the preoperative diagnosis of microcystic SCA remains challenging, and it is potentially misdiagnos...

    Shinichiro Nakamura, Yasuhiro Murata, Katsunori Uchida in Surgical Case Reports (2022)

  14. Article

    Open Access

    Risk factor analysis of postoperative pancreatic fistula after distal pancreatectomy, with a focus on pancreas-visceral fat CT value ratio and serrated pancreatic contour

    In pancreaticoduodenectomy, the pancreas-visceral fat CT value ratio and serrated pancreatic contour on preoperative CT have been revealed as risk factors for postoperative pancreatic fistulas. We aimed to eva...

    Koki Maeda, Naohisa Kuriyama, Takuya Yuge, Takahiro Ito, Kazuyuki Gyoten in BMC Surgery (2022)

  15. No Access

    Article

    The usefulness of modified splenic hilum hanging maneuver in laparoscopic splenectomy, especially for patients with huge spleen: a case-control study with propensity score matching

    Although Laparoscopic splenectomy (LS) have been proven to the standard operation for removal of spleen, the rate of conversion to open surgery is still higher than those of other laparoscopic surgeries, espec...

    Naohisa Kuriyama, Koki Maeda, Haruna Komatsubara, Toru Shinkai in Surgical Endoscopy (2022)

  16. No Access

    Article

    Impact of Combined Vascular Resection and Reconstruction in Patients with Advanced Perihilar Cholangiocarcinoma

    Perihilar cholangiocarcinoma often involves the adjacent vasculature, including the portal vein and hepatic artery. Combined vascular resection and reconstruction of the portal vein is more common than vascula...

    Naohisa Kuriyama, Haruna Komatsubara, Yuki Nakagawa in Journal of Gastrointestinal Surgery (2021)

  17. No Access

    Article

    Proximal subtotal pancreatectomy as an alternative to total pancreatectomy for malnourished patients

    To investigate whether proximal subtotal pancreatectomy (PSTP) is superior to total pancreatectomy (TP) for preserving postoperative endocrine function, and to identify the pre-operative risk factors influenci...

    Yuki Nakagawa, Hiroyuki Kato, Koki Maeda, Daisuke Noguchi, Kazuyuki Gyoten in Surgery Today (2021)

  18. Article

    Open Access

    Association between gastric Candida colonization and surgical site infections after high-level hepatobiliary pancreatic surgeries: the results of prospective observational study

    High-level hepatobiliary pancreatic (HBP) surgeries are highly associated with surgical site infections (SSIs), in which microorganisms have a significant role. In the present study, we investigated whether ga...

    Kazuyuki Gyoten, Hiroyuki Kato, Aoi Hayasaki in Langenbeck's Archives of Surgery (2021)

  19. Article

    Open Access

    Onodera’s prognostic nutritional index is a strong prognostic indicator for patients with hepatocellular carcinoma after initial hepatectomy, especially patients with preserved liver function

    Several inflammation-based scores are used to assess the surgical outcomes of hepatocellular carcinoma (HCC). The aim of the present study was to elucidate the prognostic value of the prognostic nutritional in...

    Akihiro Tanemura, Shugo Mizuno, Aoi Hayasaki, Kazuyuki Gyoten in BMC Surgery (2020)

  20. Article

    Open Access

    Protruded duodenal tumor arising from Santorini’s duct of the pancreas: a rare case of intraductal papillary mucinous neoplasm mimicking a duodenal polypoid tumor

    We experienced a rare case of intraductal papillary mucinous neoplasm arising from Santorini’s duct (SD) forming a tumor protruding into the duodenum .

    Haruna Komatsubara, Hiroyuki Kato, Daisuke Noguchi, Kazuyuki Gyoten in BMC Gastroenterology (2020)

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