Abstract

This retrospective study surveyed the histological prevalence of 180 canine neoplasms registered during 2016-2020 in the small animal hospital, the Rajamangala University of Technology Tawan-Ok, Chonburi, Thailand. Histopathologic diagnosis of each neoplasia was performed using its published diagnosis criteria. The neoplasms were categorized into epithelial, mesenchymal and round-cell neoplasms. Their parameters were related to sex, breed, and neoplastic location. The study consequence revealed that benign neoplasms occurred in the same frequency as malignant neoplasia. Some neoplasms were sex-dependent, particularly mammary adenocarcinoma in females and perianal (hepatoid) gland adenoma in males. The purebred dogs were prone to the malignant mammary gland and benign mesenchymal neoplasia; meanwhile, the crossbred dogs had more frequencies of benign epithelial, benign round cell and malignant mesenchymal neoplasms than the purebreds. The buttock and head were the primary locations of benign epithelial neoplasms. The mammary gland was common for mammary cancers, while the hindlimb was the predilection site of the malignant mesenchymal neoplasia. These results are similar to the thosedescribed in the previous studies from other regions of Thailand and the rest of the world with a few different points. Therefore, regional veterinarians, particularly in Chonburi province, can confidently use our study findings to set up their preliminary diagnoses for their neoplastic patients.