“…The most common among malignancies metastatic to the breast as reported in the literature are melanomas, neuroendocrine carcinomas from various sites, ovarian tumors and leukemias/lymphomas, although virtually any malignancy may metastasize to the breast. 2,7,8,23,26,27 Radiologically these lesions are usually imaged by mammography and/or ultrasound and appear as single, round, discrete lesions usually lacking the irregularities and microcalcifications of primary breast malignancies. 4,6,23,24,27 Fine needle aspiration biopsy is an excellent firstline diagnostic modality that is particularly informative when the cytopathologist is an integral member of a multidisciplinary team of health care providers.…”