Hiroaki Tanaka

Papers

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About

Hiroaki Tanaka is a clinician-researcher specializing in perioperative medicine, surgical oncology, and coagulation disorders, with a particular focus on rare complications following minimally invasive cancer surgeries. His most cited work, a 2022 case report, documents the first known instance of acquired hemophilia A diagnosed after robot-assisted laparoscopic gastrectomy for gastric cancer. In this study, Tanaka details the case of a 79-year-old male patient who developed persistent anemia postoperatively despite minimal intraoperative blood loss, ultimately revealing a critically prolonged APTT (63.9 seconds), Factor VIII activity at 6%, and a high-titer Factor VIII inhibitor (27 BU/mL). This contribution is pivotal for surgeons and anesthesiologists, highlighting that acquired hemophilia—a life-threatening autoimmune bleeding disorder—can masquerade as routine postoperative bleeding. Though early in his citation impact (2 citations), the work has been recognized for its clinical rarity and educational value in differential diagnosis. Tanaka’s research bridges surgical innovation and hematological vigilance, emphasizing the need for coagulation monitoring in robotic surgery. His case report serves as a critical reference for managing unexpected coagulopathy in the growing field of robot-assisted oncologic procedures.