Histological diagnostics of intra-current mammary gland adenocarcinoma in cats

The research objective was the definition of micro- structural signs allowing differentiating intraductal ade- nocarcinoma of mammary gland in cats. The questions of histologic diagnostics of intraductal adenocarcinoma of mammary gland in cats were considered. The re- search was carried out in histologic laboratory of the Department of Anatomy, Pathological Anatomy and Surgery of Institute of Applied Biotechnology and Veter- inary Medicine of Krasnoyarsk State Agrarian University in 2017-2018. Mammary glands of cats selected during the operation for the removal of organ tumors in a veter- inary clinic were investigated. Breast tumor pieces were fixed in formalin, embedded in paraffin, sliced on micro- tome and stained sequentially with a nuclear dye - hematoxylin and then cytoplasmic (acidic) dye - eosin. Among malignant neoplasms detected in cats, breast adenocarcinoma was most often detected - 90 % of cases. Average age of sick cats was 10 years. Whenbreast tumor was detected and the diagnosis of adeno- carcinoma was established, the prognosis of the dis- ease was unfavorable, 70-80 % of cats died within a year from relapses...