Original scientific paper

A clinical and histopathological study of ocular neoplasms in dairy cattle

Mohammad Javad Gharagozlou ; Department of Pathology, Faculty of Veterinary Medicine, University of Tehran, Iran
Parviz Hekmati ; Large Animal Surgery Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Iran
Javad Ashrafihelan ; Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Iran

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.

Keywords

squamous cell carcinoma; cattle; pathology

Hrčak ID:

24762

URI

https://hrcak.srce.hr/24762

Publication date:

19.10.2007.

Article data in other languages: croatian

Visits: 2.268 *