Microcystic urothelial carcinoma of the urinary bladder metastatic to the penis.

Metastatic spread of primary bladder cancer to the penis is an extremely rare event. Microcystic urothelial carcinoma is a very rare variant of urothelial carcinoma. Due to its rareness and insufficient clinical follow-up data, the prognosis of microcystic urothelial carcinoma is still not clear. Here in we report a case of a penile metastasis from microcystic urothelial carcinoma of urinary bladder, in a 56-year-old man who died 6 months after radical cystoprostatectomy and total penectomy. To the best of our knowledge this is the first case report of microcystic variant of urothelial carcinoma which has metastasized to the penis.