EPIDEMIOLOGY, RISK FACTORS AND PATHOMORPHOLOGICAL FEATURES OF MAMMARY TUMORS IN CATS
Authors:   Doctor of Veterinarian Sciences, Head of Department of Veterinary Medicine of the Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia, Dyulger Georgy Petrovich,  ,   dulger@rgaumsha.ru,   https://orcid.org/0000-0003-2501-1235, Dyulger Petr Georgiyevich,  ,   Candidate of Veterinarian Science, Senior lecturer of the department of Veterinary Medicine of the Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia; peterdyulger@gmail.com; https://orcid.org/0000-0002-6760-1762, Alikhanov Oralbek,  ,   Candidate of agricultural sciences, the department of veterinary medicine, "South Kazakhstan State University named after M. O. Auezov", Shymkent, Kazakhstan; oralbekalihanov64@gmail.com; https://orcid.org/0000-0003-2309-265X, Sedletskaya Evgenia Sergeevna,  ,   Candidate of Veterinarian Sciences, Senior lecturer of the department of Veterinary Medicine of the Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia; sloni7@mail.ru; https://orcid.org/0000-0003-3548-7990, Latynina Evgenia Sergeevna,  ,   postgraduate student, Assistant of the Department of Veterinary Medicine of the Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia; evgenialatynina@rgaumsha.ru; https://orcid.org/0000-0001-5145-1184, Obukhova Mariya Evgenievna,  ,   Candidate of Biological Sciences, Associate professor of the Department of Veterinary Medicine of the Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia; m.obukhova@rgau-msha.ru; https://orcid.org/0000-0001-7050-9089, Leontieva Irina Leonidovna,  ,   Candidate of Biological Sciences, Senior lecturer of the department of Veterinary Medicine of the Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia; irleontjeva@rgau-msha.ru; https://orcid.org/0000-0002-9736-1640, Bychkov Vladislav Sergeevich,  ,   Candidate of Veterinarian Science, Lecturer of the Department of Veterinary Medicine of the Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia; vlad91bd@yandex.ru; https://orcid.org/0000-0003-1548-9999, Baimukanov Dastanbek Asylbekovich,  ,   Corresponding Member of the National Academy of Sciences of the Republic of Kazakhstan, Doctor of Agricultural Sciences, Chief Researcher of the Department of Technology for Scientific Support of Dairy Cattle, Kazakh Scientific Research Institute of Animal Breeding and Fodder Production, Almaty, Kazakhstan; dbaimukanov@mail.ru, https://orcid.org/0000-0002-4684-7114
Published: December 2020

Mammary tumors (MT) are the 3rd most common neoplasm in cats. The incidence rate is significantly influenced by gender, age, breed, ovarian status, and the use of progestin-based contraceptives. MTs are a group of neoplasms that is heterogeneous in terms of tissue belonging, histological structure, and biological behavior. Malignant tumors are most frequent and compile from 80% to 96% of all tumors and tumor-like mammary lesions. Mammary cancer (MC) prevails, accounting for 91.4% of all cases of malignant tumors. Invasive breast cancer is much more common than carcinoma in situ. Among histological types of breast cancer, cribriform, solid, and tubulopapillary carcinomas predominate; mucous, tubular, and papillary carcinomas are less common.