Treatment of Feline Mammary Fibroepithelial Hyperplasia Following a Single Injection of Proligestone

Abstract

A case of fibroepithelial hyperplasia of the mammary gland in the cat is reported. A seven-monthold female cat was presented for diffuse enlargement of all of the mammary glands. The cat was treated with proligestone (Covinan®) for the suppression of estrus. Four weeks later all 8 mammary glands were asymmetrically enlarged. There was ulceration of one gland. Sonographic imaging of the affected mammary glands showed homogeneous and granular structures. The patient was treated with subcutaneous injections of 10 mg/kg aglépristone (Alizine®) on days 1, 2, 7, 14 and 21. Within six weeks the mammary glands had completely regressed. No side effects were observed. It is the first case of fully documented feline mammary fibroepithelial hyperplasia and its treatment in the Czech Republic.