A Case Report of Traumatic Neuroma of the Cervical Spinal Cord in a Dog

Abstract

ABSTRACT. Traumatic neuroma of the cervical spinal cord was diagnosed in a 14-year-old male mixed-breed dog. A gross view showed two intradural extramedullary masses, measuring 1 and 0.6 cm in length and 0.7 and 0.4 cm in diameter, attached to the left side of the spinal cord at the level of the sixth and seventh cervical vertebrae. Microscopically, the cervical spinal masses comprised interlacing fascicles of axons and Schwann cells surrounded by collagenous stroma. Immunohistochemically, the fascicles were stained positively for neurofilament and S-100 proteins. Ultrastructurally, variably sized myelinated fibers and onion bulb-like structures were observed. To our knowledge, this is the first report of a traumatic neuroma in the cervical spinal cord of a dog.

Orbital rhabdomyosarcoma and traumatic neuroma following enucleation for a uveal schwannoma in a dog: a case report

“…Microscopically, the hallmark of traumatic neuroma is a haphazard arrangement of regenerating axons in a background of Schwann cells, perineural cells, and connective tissue elements . Orbital traumatic neuromas have been previously diagnosed in humans after orbital decompression surgery; however, the majority of traumatic neuromas are a complication of orthopedic procedures . Traumatic neuromas are histologically somewhat similar in appearance to schwannomas but are more highly differentiated.…”

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

“…Dois cães apresentaram neoplasia óssea vertrebral, um com malformação em vértebras cervicais e um neoplasia medular, em nossos estudos. As neoplasias em SNC podem comprimir segmento medular como é o caso dos neuromas (Park et al 2012) ou mesmo ter a natureza intratecidual, gerando além de compressão a perda de função neuronal (Jull et al 2011). Alterações da estrutura óssea e das cartilagens articulares podem levar a compressão por alterações secundárias, a exemplo do Condroma (Ródenas, Pomarola & Añor 2008) e Osteocondromatose (Caporn & Read 1996).…”

Calving-related intradural avulsion injuries of the thoracolumbar spinal nerve roots in a calf

“…19 In the veterinary field, traumatic neuroma is well-known as a consequence of tail docking in dogs, 5 lambs, 4 and pigs. 11,16 The disease has also occurred as a result of repair processes linked to cervical spinal cord injury in a dog, 8 and as a postsurgical complication following castration in horses. 1 Although nerve amputation would be expected to produce a localized nodular neuroma, amputation of spinal nerve roots would result in the proliferation of numerous small nerve bundles throughout the affected tissue.…”

“…19 In the veterinary field, traumatic neuroma is well-known as a consequence of tail docking in dogs, 5 lambs, 4 and pigs. 11,16 The disease has also occurred as a result of repair processes linked to cervical spinal cord injury in a dog, 8 and as a post-surgical complication following castration in horses. 1…”