title: Transitional cell carcinoma of the fossa navicularis of the male urethra.
abstract: We report a case of transitional cell carcinoma arising in the fossa navicularis, a portion of the male urethra ordinarily lined by squamous epithelium. This is the third reported case of transitional cell carcinoma of the distal urethra. The neoplasm metastasized to superficial inguinal lymph nodes.
mesh_terms: D002295:Carcinoma, Transitional Cell / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D014523:Urethral Neoplasms / Q000175:diagnosis* / Q000473:pathology