Frecuencia de neoplasias en glándula mamaria de caninos: estudio retrospectivo en el periodo 1992-2006 en la ciudad de Lima, Perú

The aim of the study was to determine the frequency of neoplasms in the mammary gland of dogs. In this retrospective study (period of 1994-2006), records from the Patology Laboratory of the Veterinary Medicine Faculty, San Marcos University were used. There were a total of 4496 canine protocols of which 1128 were corresponded to neoplasms (25 ± 1.2%). Among them, 204 cases were in the mammary gland (18.1 ± 2.3%). Mammary neoplasms gland mainly occurred in females (94%) and in crossbred animals (38.3%). Dogs older than 10 years of age were most affected (46.4%). The inguinal pair was also the most affected (32.6%). Malignant neoplasms were more frequent (78%) than benign neoplasms. The adenocarcinoma was the most common neoplasm affecting the mammary gland (53.4%).