FUNCTIONAL ECTOPIC INTERSTITIAL CELL TUMOR IN A CASTRATED MALE CAT

A 12-year-old male cat that had been castrated at 6 months of age was examined to determine the cause of urine spraying of 2 years' duration . The cat had acquired physical characteristics of a sexually intact m ale, and its serum testosterone concentration was greater than values expected for a castrated cat. Administration of a variety of medicatio ns did not halt urine spraying. At necropsy, an interstitial cell tumo r was found in a remnant of a spermatic cord.