Metastasis to the breast from extramammary malignancies: a report of four cases and a review of literature

Abstract

Breast metastases from extramammary tumours are rare with few cases reported. Four cases of metastasis to the breast are presented and the diagnostic problems of this condition are reviewed. Correlation between the histology of primary tumour and the cytology of breast metastatic tumour can avoid the surgical breast biopsy and unnecessary mastectomy. Metastasis to the breast has poor prognosis.