Primary malignant melanoma of urinary bladder

Abstract

Primary malignant melanoma of genitourinary tract is rare and accounts for only 0.2% of all melanomas. Urethra is the most common site of origin, although primary malignant melanoma of urinary bladder is extremely rare.1 Only 24cases of primary malignant melanoma of urinary bladder are reported to date.2 Malignant melanomas of bladder are usually metastatic lesions, which originate from distant primary site rather than being a primary lesion.3 We report a case of primary malignant melanoma of urinary bladder.