Masayuki Kojima

About

Dr. Masayuki Kojima is a pioneering hepatobiliary and pancreatic surgeon whose research has fundamentally shaped the modern practice of minimally invasive liver and pancreatic surgery. His work centers on comparing the safety, efficacy, and technical nuances of robotic versus laparoscopic approaches for complex procedures. Dr. Kojima’s landmark 2022 study, a propensity score-matched analysis of over 3,800 major hepatectomies, demonstrated that robotic right and extended right hepatectomies are safe and feasible, achieving comparable outcomes to laparoscopic techniques while offering potential advantages in complex dissections. This work, cited over 120 times, is complemented by his international multicenter studies on open conversion risk factors, which provide critical decision-making frameworks for surgeons. He has also made significant contributions to the management of hepatocellular carcinoma in cirrhotic patients, showing that minimally invasive anatomic resections using the extrahepatic Glissonian approach yield excellent perioperative outcomes. With over 250 total citations, Dr. Kojima’s research has directly influenced clinical guidelines and training curricula worldwide, establishing him as a leading authority in the safe expansion of robotic hepatobiliary surgery.

Research Focus

Key Achievements

Top Papers

1. 1
   Propensity Score–Matched Analysis Comparing Robotic and Laparoscopic Right and Extended Right Hepatectomy

   120 citations · 2022
2. 2
   Risk Factors and Outcomes of Open Conversion During Minimally Invasive Major Hepatectomies: An International Multicenter Study on 3880 Procedures Comparing the Laparoscopic and Robotic Approaches

   36 citations · 2023
3. 3
   Initial experience with robotic liver resection: Audit of 120 consecutive cases at a single center and comparison with open and laparoscopic approaches

   24 citations · 2022
4. 4
   Impact of Liver Cirrhosis, Severity of Cirrhosis, and Portal Hypertension on the Difficulty and Outcomes of Laparoscopic and Robotic Major Liver Resections for Primary Liver Malignancies

   19 citations · 2023
5. 5
   Minimally Invasive Anatomic Liver Resection for Hepatocellular Carcinoma Using the Extrahepatic Glissonian Approach: Surgical Techniques and Comparison of Outcomes with the Open Approach and between the Laparoscopic and Robotic Approaches

   17 citations · 2023
6. 6
   Robotic versus laparoscopic liver resections for hepatolithiasis: an international multicenter propensity score matched analysis

   15 citations · 2023
7. 7
   Factors Associated with and Impact of Open Conversion in Laparoscopic and Robotic Minor Liver Resections: An International Multicenter Study of 10,541 Patients

   10 citations · 2024
8. 8
   Wrapping double-mattress anastomosis for pancreaticojejunostomy in minimally invasive pancreaticoduodenectomy can significantly reduce postoperative pancreatic fistula rate compared with conventional pancreaticojejunostomy in open surgery: An analysis of a propensity score-matched sample

   10 citations · 2021
9. 9
   Impact of liver cirrhosis, severity of cirrhosis and portal hypertension on the difficulty of laparoscopic and robotic minor liver resections for primary liver malignancies in the anterolateral segments

   8 citations · 2023
10. 10
    Distal pancreatectomy with en bloc celiac axis resection (DP-CAR) using retroperitoneal-first laparoscopic approach (Retlap): A novel minimally invasive approach for determining resectability and achieving tumor-free resection margins of locally advanced pancreatic body cancer

    7 citations · 2022

Key Collaborators

Contact & Links