Some etiopathogenetic features of dogs’ breast tumors

The article presents data on the epidemiological features of breast cancer in dogs, namely: the frequency of oncological pathologies in dogs in 2017-2019, the structure of oncological diseases, studied the age-sex characteristics of breast tumors, the frequency of certain risk factors leading to the development of breast neoplasms in dogs. From this study, it was found that neoplasms occurred in 4.8% of the dogs admitted to the clinic. In dogs, a mammary gland tumor was recorded in 153 individuals оf which, 150 females and 3 males. Breast tumors ranked first in localization (28% of all tumors), and skin tumors ranked second (8.5% of all tumors). In females, the first place is a breast tumor (45%), in males - skin tumors (13%). In most animals, the size of a breast tumor at its primary detection corresponded to the T2-T4 stage according to the TNM classification, and in some cases T4a-d. Out of 150 females with breast tumors, only 40 were castrated. This justifies the need for the formation of approaches to early diagnosis of breast tumors in domestic dogs, as well as to the study and prevention of risk factors