Pathohistological Characteristics of Spontaneous Mammary Tumors in the Bitch in Bulgaria

Abstract

The pathohistological characteristics of 264 spontaneous mammary tumors in the bitch were examined and analyzed at the Department of General and Clinical Pathology, Faculty of Veterinary Medicine, Trakia University – Stara Zagora. The neoplastic formations were fixed in a 10% solution of neutral buffered formalin and processed according to the classical histological technique. We classified the tumors according to the histological classification for canine mammary tumors published by Goldschmidt et al. (2011). 5 types of benign and 11 types of malignant tumors were diagnosed. Mixed mammary gland tumors (14.39%) and fibroadenomas (8.71%) predominated among the benign ones, and tubulopapillary carcinoma (22.73%) and solid carcinoma (11.74%) prevailed among the malignant ones. Based on the conducted research, we can conclude that mammary gland tumors are an important problem in the pathology of dogs. We believe that tracking their pathohistological characteristics will contribute to modern diagnostics and therapy.