author(s)
S Soujanya, D Madhuri and M Lakshman

abstract
Occurrence of certain tumours in bovines was studied in Korutla, Jagtial district during the period January 2018 to June 2018. Squamous cell carcinoma, fibroma and lymphosarcoma were diagnosed based on characteristic histopathological changes in various tissue samples which were presented to the Department of Veterinary Pathology, College of Veterinary Science, Korutla. Microscopically, in squamous cell carcinoma proliferation of squamous epithelial cells were noticed and these cells were arranged concentrically and appeared as epithelial pearls. Few mitotic figures and numerous round masses of keratin pearls were observed. In fibroma, proliferating neoplastic spindle shaped fibrocytes and prominent collagenous stroma forming interwoven bundles were seen. In lymphosarcoma, pleomorphic small neoplastic lymphocytes were observed and there was increase in nuclear: cytoplasmic ratio. Among the various bovine tumours examined, cases of squamous cell carcinoma were high followed by fibroma and lymphosarcoma.