Professor, Department of Breast Surgery, Kyorin University School of Medicine,
2013 – Editorial Advisory Board, European Journal of Surgical Oncology
2017 – Council, Breast Surgery International
Director, Federation of Asian Clinical Oncology
2018 – 2022 Chairman of the Board of Directors, Japanese Breast Cancer Society
2020 – 2021 President, Japanese Breast Cancer Society
2024 – 2026 Vice President of Asia, Senologic International Society
2022 – 2024 Director, Japan Surgical Society