Tsunekazu Hanai
Papers
14
Total Citations
267
H-Index
9
About
Tsunekazu Hanai is a pioneering surgical oncologist whose work has fundamentally advanced the field of minimally invasive and robotic surgery for rectal cancer. His research has focused on comparing the clinical outcomes of robot-assisted versus conventional laparoscopic approaches, with a particular emphasis on total mesorectal excision (TME) quality, perioperative safety, and functional preservation. His most-cited work, a propensity-matched analysis of Japan's National Clinical Database (78 citations), provided critical population-level evidence supporting robot-assisted low anterior resection, while his comprehensive technique review (43 citations) became an essential reference following Japan's 2018 national insurance approval of robotic rectal surgery. Hanai has contributed innovative surgical methods, including the double bipolar technique for robotic TME, and has led or participated in landmark prospective multicenter trials such as the PRODUCT and VITRUVIANO studies, evaluating circumferential resection margins and locally advanced disease outcomes. Notably, he has extended his expertise to emerging robotic platforms, producing pioneering comparative data on the hinotori™ system versus the da Vinci standard. With over 250 cumulative citations, Hanai's body of work continues to shape evidence-based practice in rectal cancer surgery globally.
Research Focus
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