April 1990: Graduated from Miyazaki Medical College, Resident and Specialist at NTT Kanto Teishin Hospital

April 1995: Research Resident, Clinical Oncology Pathology Department, National Cancer Center Research Institute

April 1997: Medical Officer, Clinical Laboratory Department, National Cancer Center Hospital

May 2001: Research Associate, Department of Pathology, Johns Hopkins University, USA

April 2004: Lecturer, Department of Pathology, Tokyo Medical University

April 2005: Lecturer, Department of Pathology, Graduate School of Medicine, The University of Tokyo

April 2006: Associate Professor, Department of Pathology, Graduate School of Medicine, The University of Tokyo

Pathology Department, University of Tokyo Hospital Deputy Director
April 2009 Professor and Director of the Department of Pathology, Jichi Medical University Hospital
April 2024 Professor and Head of the Department of Pathology, Jichi Medical University Hospital
Director of the Department of Pathology, Jichi Medical University Hospital (concurrent)
June 2024 Professor of the Department of Comprehensive Pathophysiology and Pathology, Jichi Medical University Hospital