Takayoshi Uematsu1,2, Seigo Nakamura3,4, Noriaki Ohuchi5,6. 1. Japanese Breast Cancer Society, Tokyo, Japan. t.uematsu@scchr.jp. 2. Department of Breast Imaging and Breast Intervention Radiology, Shizuoka Cancer Center Hospital, Shizuoka, Japan. t.uematsu@scchr.jp. 3. Japanese Breast Cancer Society, Tokyo, Japan. 4. Division of Breast Surgical Oncology, Department of Surgery, Showa University Hospital, Tokyo, Japan. 5. Japan Association of Breast Cancer Screening, Tokyo, Japan. 6. Tohoku University Graduate School of Medicine, Miyagi, Japan.