Gynaecomastia in a tom-cat caused by cyproterone acetate: a case report

The contribution demonstrates gynaecomastia in an adult, noncastrated tom- cat, caused by an antiandrogenic preparation Androcur tablets (Schering AG, BRD), administrated at the dose of 5 mg/ day for one week. Two months after the treatment, the enlargement of all mammary glands was apparent and one month later (i. e. three months after the end of drug administration) the mammary chains reached the size of 30 x 15 x 20 cm. The general health state of the animal was altered due to the conspicuous enlargement and inflammation of mammary glands. Radical mastectomy was done under general anaesthesia using Isoflurane Rhone- Poulenc inh. The weight of the extirpated mammary chains was 1.75 kg. The healing of operative wounds and convalescence occurred without complications. Fibroepithelial hyperplasia of mammary glands was diagnosed histologically.