ABSTRACT
Multiple Primary Malignant Neoplasms (MPMNs) are rarely reported and are defined as the diagnosis of ?2 independent, primary malignancies of different histologies/ origins in a single individual. In this study, we report a patient with Male Breast Cancer (MBC) and coexisting Small Lymphocytic Lymphoma (SLL) and Chronic Lymphocytic Leukemia (CLL). A 65-year-old male with complaints of a lump in his left breast since 2 years. CT scan findings were a non-homogeneous mass in the left breast along with bilateral axillary lymphadenopathy. Modified radical mastectomy was done. Microscopic examination showed the features of infiltrating duct carcinoma NOS: Modified Nottingham Bloom Richardson抯 Grade II in breast specimen. A peripheral smear of the patient showed features of chronic lymphocytic leukemia (absolute lymphocyte count was 16400 cells/mm3). IHC of breast tumor showed ER/PR positivity with H scores of 350 and 240 respectively and HER- 2/Neu protein expression was negative with a score of (1+). Lymph nodes were immunoreactive for CD 19, CD 23 and CD 5. Cells were non-reactive for Cyclin D1a and CD3. This is probably the first case of MBC with SLL and CLL. The diagnosis is consistent with synchronous MPMNs, which are increasingly reported nowadays.