Bilateral Breast Carcinoma (BBC) is rare in itself with synchronous carcinoma having incidence of only 2-5% of all breast cancers, which is quite less than metachronous carcinoma. Synchronicity/metachronicity are typically associated with local and lymphatic spread and with hematogenous spread to lungs, bones and liver. Furthermore, BBC are mostly lobular carcinomas, but we report a case of 44-year-old female who presented with lump in left breast since 8-9 months and eruptions in bilateral breast since 20-25 days. Trucut biopsy was done which revealed Mucinous carcinoma in left breast and Infiltrating ductal carcinoma in right breast. Patients are usually treated with bilateral mastectomy but in our case, patient presented with advanced disease so we planned for neoadjuvant chemotherapy first.

Keywords: Bilateral Breast Cancer; Mucinous Carcinoma; Rare Presentation