APOCRINE GLAND ADENOCARCINOMA AND PHEOCHROMOCYTOMA IN A CAT

A 15-year-old, castrated male domestic shorthair was presented for a r ecurrent, perineal apocrine gland adenocarcinoma. A right adrenal mass was identified on abdominal radiography and ultrasonography performed as routine staging prior to surgical excision of the perineal fumer. An ultrasonographic-guided biopsy of the adrenal mass was performed an d a pheochromocytoma was diagnosed upon histopathology. The perineal a nd adrenal tumors were removed surgically. The cat developed fatal thr omboembolic disease following surgery and was euthanized. This is the third reported case of pheochromocytoma in a cat and is unusual in tha t two rare tumors were identified in one animal.