Perianal apocrine gland adenocarcinoma in a ferret

A 5-year-old spayed ferret was presented for examination of a 0.5 x 0.5-cm mass in the right perianal area. Cytologic examination of a fine-needle asp irate of the mass revealed a likely diagnosis of carcinoma. Rapid growth of the mass precluded surgical resection; therefore, a definitive course of r adiation therapy was initiated. The mass recurred several times at secondar y sites and was later diagnosed as an apocrine gland tubular adenocarcinoma . A combination of surgery and radiation therapy was used to manage the mas s and regional lymph node metastases.