Lipid-rich carcinoma of the breast that is strongly positive for estrogen receptor: a case report and literature review

Takaaki Oba,1 Mayu Ono,1 Asumi Iesato,1 Toru Hanamura,1 Takayuki Watanabe,1 Tokiko Ito,1 Toshiharu Kanai,1 Kazuma Maeno,1 Ken-ichi Ito,1 Ayako Tateishi,2 Akihiko Yoshizawa,2 Fumiyoshi Takayama31Division of Breast, Endocrine and Respiratory Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Nagano, 2Department of Laboratory Medicine, Shinshu University Hospital, 3Imaging Center, Ichinose Neurosurgical Hospital, Matsumoto, JapanAbstract: Lipid-rich carcinoma (LRC) of the breast is a rare breast cancer variant that accounts for