Most common site of urethral carcinoma in men is:

"The bulbomembranous urethra is involved most frequently, accounting for 60% of tumors, followed by the penile urethra (30%) and the prostatic urethra (10%)."- Campbell-Walsh Urology 9th ed. Chapter 32 Carcinoma of the male urethra is rare. Etiologic factors include chronic inflammation due to a history of frequent sexually transmitted diseases, urethritis, and urethral stricture, and there is likely to be a causal role for human papillomavirus 16 in squamous cell carcinoma of the urethra. The most common presenting symptoms are urethral bleeding, a palpable urethral mass, and obstructive voiding symptoms. Most common site is: bulbomembranous urethra (60%) penile urethra (30%) prostatic urethra (10%). Most common histological subtype is: squamous cell carcinoma (85%) transitional cell carcinoma (15%).