Cases with manifestation of chemodectoma diagnosed in dogs in Department of Internal Diseases with Horses, Dogs and Cats Clinic, Veterinary Medicine Faculty, University of Environmental and Life Sciences, Wroclaw, Poland

Abstract

In the period of 3 years, 9 tumours of chemodectoma were supravitally diagnosed and histopathologically verified in dogs. In this period 15 351 dogs were admitted to the Clinic of Dogs and Cats and 2 145 dogs were examined in the cardiological outpatient clinic for dogs. This tumour is located in a typical place - at the base of the heart. Most frequently the tumour manifested in older boxers. Only in one case such a tumour was diagnosed in another breed of dogs. The tumours ranged in size between 3 and 16 cm in diameter. The principal sign accompanying tumours of cardiac base involved dyspnoea but in 3 cases the tumours yielded no clinical signs. All the diagnoses were additionally verified using immunohistochemical examination. We used antibodies to chromogranin A (clone DAK-A3 1:100), synaptophysin (clone SY38 1:20) and neuron-specific enolase (clone BBS/NC/VI-H14 1:150). An immunohistochemical examination is vital for the diagnosis since it allows to differentiate histologically distinct types of neoplasia which may locate in the same site and may manifest a similar histological pattern.

Hallazgo Incidental De Un Quimiodectoma en Un Canino Bulldog Inglés

“…Casos de quimiodectomas en caninos fueron descritos en varios estudios siendo la infiltración auricular izquierda por células neoplásicas reportada sólo en uno de ellos (3,7,8,9,10,11,12).…”

“…La presencia de hemopericardio e hidropericardio ha sido descrita en algunos estudios (2,7,9). Sin embargo, en otros reportes mencionan ausencia de hemopericardio (7,8,10,12).…”

“…Este tipo de neoplasia ha sido más frecuentemente diagnosticado en machos que en hembras, sin embargo, en el presente estudio el diagnóstico fue en una hembra (3,7,8,9,10,11,12).…”

“…braquiocefálicas como los Bulldogs inglés y francés, Boston terrier y Bóxer (7). Los paragangliomas del cuerpo aórtico y carotídeo representan neoplasias raras que se La etiología aún se desconoce, no obstante la originan de células neuroendócrinas del paraganglia predisposición de los cánidos a padecer este tumor del sistema parasimpático.…”

Quimiodectoma maligno em um cão Weimaraner: Relato de caso

“…Assim como há necessidade de realização de exame histopatológico para diagnóstico definitivo do tipo de tumor, também seria interessante a realização de exame imunohistoquímico para diferenciação histológica distinta de neoplasias que possam apresentar o mesmo padrão histológico (Noszczyk-Nowak et al, 2010). Além disso, exames cardiológicos específicos, com eletrocardiograma e ecocardiograma, também se fazem necessário para pesquisa de disfunções elétricas e morfológicas do coração.…”