Lumbar vertebral canal stenosis due to marked bone overgrowth after routine hemilaminectomy in a dog
Tavola, Francesca (Awake Djursjukhus)
Ruggeri, Marco (ChesterGates Veterinary Specialists)
Carrera, Ines (Vet Oracle Teleneurology)
Pumarola i Batlle, Martí (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Alegria, Pablo Menendez (ChesterGates Veterinary Specialists)
Tauro, Anna (ChesterGates Veterinary Specialists)

Fecha:	2023
Resumen:	Bone overgrowth after decompressive surgery for lumbar stenosis resulting in recurrence of neurological signs has not been reported in veterinary literature. However, there are few cases described in human medicine. A 13-month-old entire female dog, a crossbreed between a Springer Spaniel and a Border Collie, weighing 24 kg, was referred with a 5-day history of progressive spastic paraplegia, indicative of a T3-L3 myelopathy. Magnetic resonance (MR) imaging revealed a right-sided L2-L3 compressive extradural lesion, compatible with epidural haemorrhage, which was confirmed by histopathology. The lesion was approached via right-sided L2-L3 hemilaminectomy and was successfully removed. One-year postoperatively the dog re-presented with pelvic limb ataxia. MR and computed tomography (CT) images demonstrated excessive vertebral bone formation affecting the right articular processes, ventral aspect of the spinous process of L2-L3, and contiguous vertebral laminae, causing spinal cord compression. Revision surgery was performed, and histopathology revealed normal or reactive osseous tissue with a possible chondroid metaplasia and endochondral ossification, failing to identify a definitive reason for the bone overgrowth. Nine-month postoperatively, imaging studies showed a similar vertebral overgrowth, resulting in minimal spinal cord compression. The patient remained stable with mild proprioceptive ataxia up until the last follow-up 18 months post-revision surgery. This is the first report in the veterinary literature of bone overgrowth after lumbar hemilaminectomy which resulted in neurological deficits and required a revision decompressive surgery.
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; Versió publicada
Materia:	Veterinary Medicine ; Veterinary Science ; Animal Anatomy ; Morphology ; Histology
Publicado en:	Acta Veterinaria Scandinavica, Vol. 65 Núm. 1 (2023) , p. 1-8, ISSN 1751-0147

DOI: 10.1186/s13028-023-00700-2
PMID: 37644545

8 p, 1.4 MB

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