Breast Cancer in Lean Postmenopausal Women Might Have Specific Pathological Features

Background/Aim: The rate of obesity, an independent risk factor for breast cancer in post-menopausal women, is quite low in Japan, indicating breast cancer in lean women to be more common in the Japanese than in Westerners. However, biological characteristics of such breast cancers have not been adequately investigated. Patients and Methods: We retrospectively investigated clinicopathological breast cancer features of 566 postmenopausal Japanese...