Vol. 10, Issue 6, Part C (2025)

Author(s): S Subapriya, S Vairamuthu, S Ramesh, P Tamilmahan, M Bharathidasan and Mohamed Shafiuzama

Abstract: In the present study, 32 cases of sweat gland tumours comprising 7 cases of sweat gland adenoma and 25 cases of sweat gland adenocarcinoma were identified in dogs, based on cytological and histopathological examination. Sweat gland adenomas were most frequently observed in Labrador retriever breed, male dogs, 5-10 years age group of dogs, with the inguinal region being the predominant tumour site. Sweat gland adenocarcinomas were primarily diagnosed in non-descript, male dogs, 1-5 years age group of dogs and with a higher prevalence in the head and limb regions. Cytologically, adenomas showed individual to clustered round to oval neoplastic cells with round vesicular nuclei, while histologically they exhibited multilayered cuboidal cells with luminal eosinophilic secretions. Adenocarcinomas revealed pleomorphic neoplastic cells with prominent nucleoli on cytology and cuboidal to columnar cells with basoeosinophilic to eosinophilic secretions and numerous mitotic figures in histopathological examination.