[Renal metastasis from breast carcinoma: a new case and review of the literature].

OBJECTIVES: Breast carcinoma is the most common malignant tumor in the female. A vast majority of the cases present metastasis at the time of diagnosis. A case of breast carcinoma metastatic to the kidney is described to emphasize that in the presence of a renal mass, a secondary or metastatic tumor should be suspected. The literature is briefly reviewed.
METHODS: We report on the diagnosis and treatment of an expanding left renal mass in a female patient with a previous history of multiorgan tumors (ovarian, breast and small bowel) or different histological types that had been diagnosed and treated at different periods.
RESULTS: Following radical nephrectomy, analysis of the surgical specimen disclosed a metastatic tumor from breast carcinoma. No subsequent treatment was required and the patient is well 6 months postoperatively.
CONCLUSIONS: Metastasis from a primary tumor must be suspected in patients with a previous history of tumor presenting with a renal mass. Renal metastasis presents in the advanced stages of tumor dissemination. Treatment depends on patient general condition and the stage of the primary and metastatic tumors.