Solitary breast cancer metastasis to the bladder: an unusual occurrence.

Breast carcinoma is the most common nondermatologic cancer diagnosis in women. Common metastatic sites include lymph nodes, lung, liver, and bone. Metastases to the bladder are exceedingly rare. To date, there are a total of 31 reports of patients diagnosed with metastatic breast cancer to the bladder while living. Only 5 of these patients were reported to have no other site of metastasis, other than axillary nodes at breast surgery. We present the sixth reported case of metastatic breast carcinoma solely to the bladder in a living patient.