Bladder metastasis of malignant melanoma: a case report and review of literature.

Metastatic malignant melanoma of the bladder is extremely rare in clinical practice with less than 10 cases reported in the last 30 years in the English literature. We report a case of malignant melanoma metastasis into the bladder, and review of the pertinent literature. A 60-year-old woman with a history of malignant melanoma in the distal phalanx on the right middle finger, excised 8 years ago presented with gross hematuria and weight loss. She underwent cystoscopy and complete transurethral resection of the bladder tumor. Pathological examination showed metastatic malignant melanoma of the bladder mucosa. The patient eventually died 7 months after transurethral resection.