Estudio retrospectivo de tumores mamarios en perras diagnosticadas por histopatología en el periodo 2021-2024

Abstract

This retrospective study determined the prevalence of canine mammary tumors (CMT) in the city of Cuenca and analyzed the risk factors associated with their development, through a case-control study between January 2021 and February 2024. Patients diagnosed with mammary tumors by histopathology in the H&E laboratory were selected, in order to analyze their medical records and collect the following variables: age, breed, neutering status, number of litters, diet, contraceptives, and age at neutering. A total of 192 mammary tumors were diagnosed, found in 163 patients. The result of the prevalence was 10.5%, with a higher frequency in malignant tumors (76%), 89.04% of which were carcinomas. It was found that 37% of the patients were between 9 and 11 years old and that the most frequent breeds were mixed-breed (28%) and poodles (17%). Among the patients, 64% were not spayed, and of the spayed ones, only 3 were subjected to this surgery before 2 years of age. Furthermore, there was a higher frequency of malignant mammary tumors in nulliparous females (30%). However, with regard to the statistical analysis of risk factors, it was found that none of them had a significant influence on the development of mammary tumors