estudo retrospectivo das neoplasias mais comuns em cães atendidos no hospital veterinário da universidade federal de uberlândia, no período de 2012 a 2020

Abstract

Tumors represent one of the main causes of death in dogs, and the improvement in health and well-being increases the number of senile canines and more susceptible to the development of neoplasms. Nationally, epidemiological studies indicate that the most frequent neoplasms in dogs and cats are cutaneous, followed by mammary tumors, hematopoietic neoplasms, oropharyngeal tumors and transmissible venereal tumor. The objectives of this study are: to analyze the frequency and epidemiological aspects of the most frequent types of cancer diagnosed at the Animal Pathology Laboratory (LPA) of the Veterinary Hospital of the Federal University of Uberlândia (HOVET-UFU) from 2012 to 2020; determine possible predisposing factors (gender, race and age) to the occurrence of these cancers in dogs from Uberlândia and region; and to explore possible risk factors involved in carcinogenesis in this population. As for the classification, the dogs were divided by gender (male – 23.79%; female – 74.78%), age (young: < 1 year, 0.30%; adults: 1 to 7 years, 14.88 %; elderly: > 7 years, 67.89%) and race (no defined race - 48.87%; defined race - 48.61%). There were animals that did not have records regarding sex, age and breed. Older dogs and Poodle, Pinscher and Dachshund breeds had a higher frequency of cancer. The Chi-Square test indicated a higher occurrence of cutaneous tumors in American Pit Bull Terrier, Boxer, Labrador Retriever, Rottweiler, Schnauzer and Shih Tzu breeds and non-cutaneous tumors in Poodle and Yorkshire Terrier and mixed breed dogs. The most affected tissue was the mammary gland (43.63%), integumentary system (37.54%) and other systems (17.20%).