Imaging Diagnosis—magnetic Resonance Imaging Features of a Cerebral Hemangioblastoma in a Dog

Abstract

The magnetic resonance (MR) imaging features of a cerebral hemangioblastoma in a 9-year-old dog are described. Imaging revealed a well-defined contrast-enhancing lesion of the rostral forebrain that appeared extraparenchymal. Histopathology of the excised mass showed clusters of small blood vessels interspersed with interstitial cells staining positive for neuronal specific enolase, features consistent with a cerebral hemangioblastoma; the mass also appeared intraparenchymal after further immunohistochemistry study. This neoplasm should be considered a rare differential diagnosis for intracranial masses in dogs.

Intradural–extramedullary haemangioblastoma with paraspinal extension in a dog

“…In the veterinary literature, only two cases of haemangioblastoma have been reported, both in dogs. In one case, the neoplasm was diagnosed as intramedullary and was located at the level of the first thoracic vertebra and in the other case the tumour had an intracranial location .…”

“…In the veterinary literature, only two cases of haemangioblastoma have been reported, both in dogs. In one case, the neoplasm was diagnosed as intramedullary and was located at the level of the first thoracic vertebra and in the other case the tumour had an intracranial location . We report the clinical, neurological, and magnetic resonance imaging (MRI) findings, as well as pathological examinations and the clinical outcome of a spinal intradural–extramedullary haemangioblastoma in a dog that was successfully treated with a hemilaminectomy and metronomic chemotherapy.…”

“…1,[4][5][6] These tumours represent approximately 2-10% of all spinal cord neoplasms in people 1,5 and can occur sporadically or as a part of the Von Hippel-Lindau syndrome. 2,3,7 In the veterinary literature, only two cases of haemangioblastoma have been reported, 8,9 both in dogs. In one case, the neoplasm was diagnosed as intramedullary and was located at the level of the first thoracic vertebra 8 and in the other case the tumour had an intracranial location.…”

Remission after complete excision of an intramedullary hemangioma with an identifiable tumor plane in a dog

“…In human and veterinary medicine, there has been debate regarding whether hemangiomas represent arteriovenous malformations, vascular hamartomas, or endothelial neoplasms . Hemangioblastoma is a similar vascular tumor, but the vascular network is separated by stromal cells . Hemangioblastoma may represent a variation of hemangioma.…”

Diagnóstico de alterações neurológicas compressivas da medula espinal de cães com o uso da Tomografia Computadorizada (TC) Helicoidal

“…Contudo, quase sempre o diagnóstico limita-se à compreensão dos sinais clínicos para assim inferir a área ou áreas acometidas num processo de doença (Lowrie 2012). A natureza da patologia envolvida é sugerida, neste caso, e não determinada com clareza (Liebel et al, 2013). O diagnós-tico por imagem é imprescindível para a visualização dos sítios afetados no Sistema Nervoso Central (SNC), de modo a se determinar o diagnóstico mais preciso ou sugerir novos exames ou mesmo para o acompanhamento do quadro (Thomas 2000).…”