Fibrosarcoma in the nasal cavity of a donkey

Abstract

Clinical and pathological findings in a case of malignant tumor located in the nasal and paranasal sinuses of a six-year-old donkey are reported. The animal was referred to the Equine Veterinary Hospital after three years of progressively increasing facial swelling. Clinically, the animal presented with tachypnea, dyspnea, and wheezing in the laryngotracheal region. There was swelling in the frontal bone and left orbital regions with exophthalmos of the left eye and bilateral mucopurulent nasal discharge, as well as retropharyngeal lymph node enlargement. Radiographic examination revealed radiopacity in the left maxillary, frontal and nasal sinuses, and in the left orbital region. Endoscopy revealed an irregular mass in the nasopharynx. Computed tomographic images of the skull showed an irregular mass, of variable density, in the rostral region, extending from the nasal cavity to the conchofrontal sinus on the left side, with dorsal displacement of the septum and dorsal nasal meatus. Loss of definition and destruction of other osseous structures of the nasal cavity and the frontal bone, and hypodense areas at the encephalic periphery were evident. Computed tomographic scans were taken to identify the localization and extension of the mass. Fibrosarcoma was confirmed on the histopathological examination for the first time in this species. The tomographic scan was considered more effective than radiography.

Donkey preputial fibrosarcoma (Equus asinus): case report

“…In the literature there are few reports of fibrosarcomas in donkeys, all of them in female donkeys.In 1992, Bonfing & Ingenhost reported fibrosarcoma in a donkey's uterus, which was successfully treated with an ovariohysterectomy.In a retrospective study of affections in female farm animals, specifically in the perineum and vagina that were surgically treated, conducted by El-Maghraby ( 2002), a fibrosarcoma involving the donkey's vulva and perineum was reported, and surgical treatmentit was a success, without recurrence. Kassem et al(2018) reported the case of a fibrosarcoma in a donkey's nasal cavity, but due to the aggressiveness of the case and the owner's decision, the animal was euthanized.…”

Tratamento cirúrgico de fibrossarcoma cutâneo em uma égua Paint Horse: relato de caso

“…De modo geral, o diagnóstico de lesões proliferativas em equinos é desafiador para o médico veterinário. Dependendo da localização, o uso de tecnologias de imagem torna-se importante para identificar o grau de extensão da alteração (Veraa et al, 2009;Cissell et al, 2012;Manso-Díaz et al, 2015;Kassem et al 2018). E, mesmo sendo pouco aplicada na espécie equina, a citologia aspirativa por agulha fina (CAAF) é uma ferramenta de triagem e auxílio diagnóstico prática e relevante (Story et al, 2005;Felizzola et al, 1999;Coleto et al, 2016;Daleck e De Nardi, 2016;Martins et al, 2019).…”