Tumors of the male urethra are uncommon. They can be categorized both on the grounds of histology and location.
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Histology
- squamous cell carcinoma of the urethra: 80%
- urothelial/transitional cell carcinoma of the urethra: 15% (predominantly posterior urethra)
- adenocarcinoma of the urethra: 5%
- leiomyosarcoma of the urethra: rare
- melanoma of the urethra (usually presents as primary prostatic melanoma): rare 1,2
- adenomatous polyp of urethra 3
- rhabdomyosarcoma: rare 4
Location
- bulbomembranous urethra: 60%
- penile urethra: 30%
- prostatic urethra: 10%
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