RT Journal Article SR Electronic T1 Bilateral breast metastases of a renal carcinoma: a case report and review of the literature JF BMJ Case Reports FD BMJ Publishing Group Ltd SP bcr0620080239 DO 10.1136/bcr.06.2008.0239 VO 2008 A1 S Ganapathi A1 G Evans A1 R Hargest YR 2008 UL http://casereports.bmj.com/content/2008/bcr.06.2008.0239.abstract AB Metastatic tumours account for <1% of all breast malignancies, most originating in the contralateral breast. An 88-year-old woman presented with bilateral breast lumps 4 years after radical nephrectomy for a T2N0M0 renal cancer. Mammography showed a circumscribed 15 mm mass just below and medial to the left nipple without any micro-calcification. Ultrasound scan showed the presence of a solid vascular mass in the left breast; a guided core biopsy confirmed it as a metastatic renal cell carcinoma. Left simple mastectomy and excision of right breast lump was done. Histology of both lesions confirmed them as metastatic deposits. Bilateral breast metastasis from a renal cancer is very rare and this is the second reported case. This case illustrates the potential for rare sites of metastases and for the consideration of metastasis in the presence of previous renal cancer. Recognition as metastatic neoplasm is important to prevent unnecessary radical procedures.