(urethral cancer) A rare cancer that forms in tissues of the urethra (the tube through which urine empties the bladder and leaves the body). Types of urethral cancer include transitional cell carcinoma (cancer that begins in cells that can change shape and stretch without breaking apart), squamous cell carcinoma (cancer that begins in flat cells lining the urethra), and adenocarcinoma (cancer that begins in cells that make and release mucus and other fluids).

A carcinoma that arises from the urethra. Morphologically, the tumors are similar to those described in the bladder.

Urethral cancer is rare and occurs in both sexes; it may be squamous or transitional cell carcinoma or, occasionally, adenocarcinoma.

Urethral cancer is rare and occurs in both sexes; it may be squamous or transitional cell carcinoma or, occasionally, adenocarcinoma.

Primary urethral cancer is an extremely rare lesion, with fewer than 2000 reported cases and comprising less than 1% of the total incidence of malignancies. For this reason, it is often difficult to treat primary urethral cancer.