Ocorrência de neoplasia mamária associada ao uso de anticoncepcional em fêmeas caninas atendidas no hospital veterinário da Universidade Federal do Piauí – Bom Jesus / Occurrence of mammary tumors by female dogs attended at veterinary hospital of Federal University of Piaui - Bom Jesus

This study aimed to report the occurrence of mammary tumors cases treated at the Veterinary Hospital of Federal University of Piauí (HVU) in Bom Jesus, Piauí. To carry out the work were analyzed the medical records of all patients treated from November 2015 to May 2016. It was observed that the prevalence of cases treated at the HVU were intended for patients of the canine species, representing 79.33% of the cases. In relation to cancer cases, there was a prevalence of mammary tumors totalizing 55.55% of cases. Has been concluded that the occurrence of mammary tumors by contraceptive use is still common in veterinary clinic, being necessary the development of actions to minimize this fact.

Ocorrência de neoplasia mamária associada ao uso de anticoncepcional em fêmeas caninas atendidas no hospital veterinário da Universidade Federal do Piauí Bom Jesus / Occurrence of mammary tumors by female dogs attended at veterinary hospital of Federal University of Piaui - Bom Jesus

This study aimed to report the occurrence of mammary tumors cases treated at the Veterinary Hospital of Federal University of Piauí (HVU) in Bom Jesus, Piauí. To carry out the work were analyzed the medical records of all patients treated from November 2015 to May 2016. It was observed that the prevalence of cases treated at the HVU were intended for patients of the canine species, representing 79.33% of the cases. In relation to cancer cases, there was a prevalence of mammary tumors totalizing 55.55% of cases. Has been concluded that the occurrence of mammary tumors by contraceptive use is still common in veterinary clinic, being necessary the development of actions to minimize this fact.(AU)

Estudo clínico, histopatológico e imunoistoquímico de neoplasias mamárias em cadelas / Clinical, histopathological and immunohistochemical study of mammary neoplasm in bitches

O objetivo foi realizar um estudo clínico e epidemiológico de neoplasias mamárias em cadelas, considerando-se histórico reprodutivo, exame físico, diagnóstico histopatológico e imunoistoquímico. Utilizaram-se 60 neoplasias mamárias, divididas em grupos (grupo 1 - benigno, e grupo 2 - maligno). Avaliaram-se dados do histórico reprodutivo, o exame físico e achados histopatológicos e imunoistoquímicos para fator de crescimento endotelial vascular. Ao estudo do histórico reprodutivo, encontraram-se 90% dos animais com irregularidade de cio, 86,63% das cadelas não foram medicadas com contraceptivos e 83,33% não eram castradas. Ao exame físico, não foi verificada diferença (p>0,05) entre grupos ao se avaliar consistência das massas, regularidade da superfície tumoral e localização anatômica dos tumores. Quanto ao tamanho das massas, verificou-se diferença entre os grupos (p=0,0077), com 0,78±1,13cm para o grupo 1 e 1,81±2,29cm para o grupo 2. Diagnosticaram-se 40% de massas benignas e 60% de malignas, de acordo com os tipos de neoplasias. Para VEGF, verificaram-se valores médios de 2,22±0,89 para tumores malignos e 1,66±0,91 para benignos, com diferença entre grupos (p=0,0315). As neoplasias mamárias em cadelas não apresentam características de histórico reprodutivo e de exame clínico que auxiliem o diagnóstico diferencial, sendo a histopatologia o único método para conclusão do diagnóstico e a imunoistoquímica podendo ser utilizada para prognóstico da lesão.(AU)

The objective was to conduct a clinical and epidemiological study of mammary cancer in bitches, considering their reproductive history, physical examination, histopathological and immunohistochemical diagnosis. We used 60 breast tumors which were divided into groups (group 1 - group 2 and benign - malignant). We evaluated data from the reproductive history, physical examination and histopathology and immunohistochemistry for VEGF. The study of reproductive history had 90% of irregular estrus, 86.63% of the dogs were not tested with contraceptives and 83.33% were not castrated. On physical examination, there was no difference (p>0.05) between groups regarding the consistency of the masses, surface regularity of the tumor and anatomic location of tumors. As for the masses, there was a difference between groups (p=0.0077), with 0.78±1.13cm for group 1 and 1.81±2.29 cm for group 2. 40% of benign masses and 60% of malignant masses were diagnosed, according to the types of malignancies. For VEGF, the average values were 2.22±0.89 for malignant tumors and 1.66±0.91 for benign, with differences between groups (p=0.0315). The mammary tumors do not exhibit characteristics of reproductive history and clinical examination to help the differential diagnosis, and histopathology is the only method for completion of diagnosis and immunohistochemistry which can be used for injury prognosis.(AU)