Extensive dermal metastases from primary signet-ring carcinoma of the urinary bladder.

Dermal metastasis from internal carcinoma occurs infrequently. Bladder carcinoma is a rare source of skin metastasis. This report details the case of a twenty-five-year-old man with a fatal primary signet-ring adenocarcinoma of the bladder who experienced unique, extensive, infiltrative, cutaneous metastases within a few weeks of his initial presentation with an occultly carcinomatous ruptured spleen. The literature on cutaneous metastasis from carcinoma of the bladder is reviewed.