Vol. 10, Special Issue 12 (2021)

Author(s):
Dr. A Arulmozhi, Dr. P Shanumugavadivu, Dr. MSelvaraju, Dr. K Elamurugan and Dr. GA Balasubramaniam

Abstract:
The aim of the present study is to explore the incidence of genital tumours in dogs. The dogs with tumour mass at the external genitalia brought to Veterinary Clinical Complex (VCC) were recorded from 2015 to 2019. The gross lesions were noted and impression smears from the tumour mass were collected for cytological studies. Biopsy samples / surgically removed masses were collected in 10 per cent neutral buffered formalin for histopatholgical examination. The higher incidence occurred in bitches than male dogs especially during 4 to 5 years of age. Breed-wise incidence showed that the Non-Descriptive dogs are mostly affected followed by chippiparai. Grossly, there was small papule to cauliflower like growth noticed in external genitalia of male and female dogs. The cytological picture exhibited sheets of discrete round to oval cells with punctate cytoplasmic vacuoles and were confirmed as Transmissible Venereal Tumour (TVT). Histopathology of TVT tissue sections showed sheets of round cells with vesicular nucleus, thin fibrovascular stroma and numerous mitotic figures. Interestingly, two cases of extra genital form of TVT also recorded during this period.