Feline mammary gland tumors represent a highly aggressive neoplastic d
isease that has to be taken very seriously. Tumor size can be consider
ed as the most important prognostic factor - meaning that the lesser t
he size of the tumor at the time of its diagnosis and surgical removal
, the better the chances for longer-term control of the disease. Aggre
ssive surgical approach is mandatory. Previous studies have shown that
patients undergoing radical mastectomy achieve a significantly increa
sed disease-free interval compared to those treated via simple mastect
omy alone. In advanced stages of the disease, adjuvant chemo- and radi
otherapeutic measures can help to improve disease control and therefor
e prolong patient survival.