Transitional cell carcinoma of the urethra in a cat.

A case of transitional cell carcinoma of the prostatic and anterior pelvic urethra of a cat is presented. Primary urinarty tract neoplasms in the cat are rare, and transitional cell carcinoma with major involvement of the urethra has not been previously reported. The appearance and location of this tumor made differentiation from a prostatic carcinoma difficult. The clinical presentation consisted of emaciation, constipation, anorexia, and hematuria.