Year: 2007
Type: article
Abstract: The aim of this study was to show the natural occurrence of ocular neoplasms in dairy cattle kept in 8 dairy farms around Tehran consisting of approximately 5000 dairy cows, over a period of two years.Animal characteristics, type of husbandry and climatic conditions were recorded.Tumours were removed surgically and examined grossly and microscopically.In the present study 32 cases of ocular neoplasms were diagnosed.The affected animals were female (100%), adult and more than 50% of them aged more than five years.In most of the cases (70%) the lesion were located in the nictitating membrane and palpebral conjunctiva.Intraocular invasion was noted in 7 cases (21.87%).Microscopically, in 12 cases out of 32 (37.5%) the tumours were noninvasive squamous cell carcinoma or carcinoma in situ; 18 cases (56.25%) were invasive squamous cell carcinoma; a single case (3.12%) was lymphosarcoma while a further single case (3.12%) was malignant hemangioendothelioma.The grade of malignancy was assessed for each case of neoplasms based on descriptions appearing in the literature.Most of the ocular neoplasms diagnosed were squamous cell carcinoma, mostly located in the nictitating membrane and palpebral conjunctiva.
Authors: Mohammad Gharagozlou, P. Hekmati, Javad Ashrafihelan
Institutions: University of Tehran, University of Tabriz
Language: English
Topic: Veterinary Oncology Research
Subfield: Small Animals
Field: Veterinary
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W2304234784