Banca de QUALIFICAÇÃO: USMAN ABDULHADI USMAN

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : USMAN ABDULHADI USMAN
DATE: 26/04/2022
TIME: 08:00
LOCAL: DMFA
TITLE:

OCULAR AND PERIOCULAR TUMORS OF DOMESTIC ANIMALS OF NORTHEASTERN BRAZIL.

KEY WORDS:

Histopathologic. Immunohistochemistry. neoplasm. Ophthalmology. Eye.

PAGES: 102
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Clínica e Cirurgia Animal
SUMMARY:

The presence of eye and periocular tumors or incurable ophthalmic diseases in domestic animals is uncommon. In Brazil, and especially in the northeast region, ocular pathology is still modest when compared to ophthalmology, the specialty from which it derives. This area of veterinary pathology is a relatively recent area within veterinary medicine, and for most veterinary pathologists it remains an unfamiliar field, given the peculiar anatomy of the eye, and the clinical examinations used in ophthalmology. It is important, however, that this science be developed, since, when observing eye lesions by ophthalmologists, primary eye neoplasms are uncommon in animals when compared with neoplasms that affect other organs. Therefore, the aim of this study was to provide information on the epidemiology of ocular and periocular tumors from domestic animals in northeastern Brazil. Thus, this thesis qualification is composed of a literature review that addresses the anatomohistophysiology of the eye and its structures, a prospective article on the anatomopathology and epidemiology of ocular and periocular tumors in domestic animals in northeastern Brazil and two report articles of a case, one on retrobulbar lymphoma in a feline and the other on a conjunctive sclero-corneal hemangiosarcoma. The literature review begins with the embryology of the eyeball and then the anatomophysiology of the eyeball and accessory structures of the eye are addressed. Additionally, this work generated a scientific article that studied the epidemiology and ocular anatomopathology of animals with ocular and periocular tumors in northeastern Brazil through the evaluation of ophthalmological clinical records, cytopathological, histopathological and immunohistochemical examinations. In total, 75 samples were analyzed, 61 from dogs, 08 samples from felines and 06 samples from horses. For the epidemiological evaluation, standardized clinical records containing information on age, sex, race, reproductive aspects, use of medications, previous pathologies, tumor dimensions, structures and location, other organs involved, time of evolution and previous neoplasms were used. In this study, the most frequent ocular and periocular neoplasms were meibomian gland adenoma (44%), squamous cell carcinoma (10.6%) and hemangioma (5.3%). Other neoplasms were also diagnosed, but with frequency ranging from 3.3% to 1.3%. Also as part of this thesis qualification, a rare case of retrobulbar lymphoma in a feline was described, where the diagnosis was possible through ophthalmological evaluation and the use of histopathology and immunohistochemistry. The second case reported, also considered rare, was a conjunctive sclero-corneal hemangiosarcoma in a dog, diagnosed through histopathology. Therefore, it is concluded, that eye neoplasms are frequent in domestic animals, with the canine species being the most affected.

 

 

BANKING MEMBERS:
Interno - 385059 - FABRICIO BEZERRA DE SA
Interno - 1929164 - FRANCISCO DE ASSIS LEITE SOUZA
Interno - 383965 - JOAQUIM EVENCIO NETO