Periódicos Brasileiros em Medicina Veterinária e Zootecnia

p. 01-04

Carcinoma de células escamosas na região frontal da cabeça em cabra

Targino Silva Almeida e Macedo, JulianaEmanuel Almeida Biscarde, CarmoSantana de Oliveira, Ricardodos Anjos Ferreira, EucimarMiguel Ocampos Pedroso, Pedro

Background: The squamous cell carcinoma is a malignant tumor of epidermal cells in which the cells show differentiation to keratinocytes. It is a common neoplasm affecting all domestic animals and other mammalian species. There are several factors that are associated with the development of a squamous cell carcinoma, including prolonged exposure to ultraviolet light, lack of pigment within the epidermis at the sites of tumor development, and lack of hair or a very sparse hair coat at the affected sites. They can appear anywhere on the animals body predominantly in areas devoid of hair and ears, eyelids, nose and perineal area. Squamous cell carcinoma may occur in young animals, but the incidence increases with age. The cut surface of the tumor appears grainy, whitish or yellowish. These tumors are very infi ltrative but rarely metastasize. Microscopically there is the characteristic feature of squamous cell carcinomas and well differentiated with abundant proliferation of stromal. The tumor is common in the horse, cow, cat, and dog, relatively uncommon in the sheep, and rare in the goat and pig. In sheep and goats there are few data in literature. This paper reports a case of squamous cell carcinoma in the frontal region of the head in a Pardo Alpino goat in Bahia.Case: An 6-year-old female Pardo Alpino goat was made euthanasia and sent for necropsy to the Laboratório de Patol

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