Closed spinal dysraphism in a 6-month-old mixed breed dog

Franco GG, Siqueira EGM, Souza JAL, Prado LOC, Rahal SC, Mamprim MJ, Minto BW, Brandao CVS, Costa Jr JS (2021): Closed spinal dysraphism in a 6-month-old mixed breed dog. Vet Med-Czech 66, 219–224.

download PDF

The term spinal dysraphism defines an incomplete fusion or a bone defect that affects the neural structures of the spinal cord due to a neural tube malformation. A 6-month-old, male, mixed-breed dog, was evaluated for paraparesis, pelvic limb proprioceptive ataxia, faecal and urinary incontinence. A neurological examination indicated an L4-S3 spinal cord segment lesion. A thoracolumbar and lumbosacral spine magnetic resonance imaging was performed and a closed spinal dysraphism, with the presence of a lipomyelomeningocele, was detected. The magnetic resonance imaging showed an entire narrowing passage and a fibrous mass stemming from a wedge-shaped gap in the caudal region of the dorsal lamina of the L4 vertebra, leaving the spinal canal towards the skin surface in the region where the skin stigma was observed. A dorsal laminectomy was performed, the spinal cord was exposed, and the entire fibrous mass was excised. Three months postoperatively, the patient had a complete resolution of the urinary and faecal incontinence showing only a residual mild paraparesis, which remained six months after surgery. The surgical procedure resulted in the satisfactory recovery of the neurological signs.

Blount JP, George TM, Koueik J, Iskandar BJ. Concepts in the neurosurgical care of patients with spinal neural tube defects: An embryologic approach. Birth Defects Res. 2019 Nov 15;111(19):1564-76.
Chern JJ, Kirkman JL, Shannon CN, Tubbs RS, Stone JD, Royal SA, Oakes WJ, Rozzelle CJ, Wellons JC. Use of lumbar ultrasonography to detect occult spinal dysraphism. J Neurosurg Pediatr. 2012 Mar;9(3):274-9.
De Decker S, Gregori T, Kenny PJ, Hoy C, Erles K, Volk HA. Tethered cord syndrome associated with a thickened filum terminale in a dog. J Vet Intern Med. 2015 Jan;29(1):405-9.
Kiviranta AM, Lappalainen AK, Hagner K, Jokinen T. Dermoid sinus and spina bifida in three dogs and a cat. J Small Anim Pract. 2011 Jun;52(6):319-24.
Kopke MA, Jack MW, Baltzer WI, Wightman PF, Gal A. Dermoid sinus type VI associated with spina bifida and tethered cord syndrome in a French Bulldog. J Vet Diagn Invest. 2019 Mar;31(2):294-7.
Plummer SB, Bunch SE, Khoo LH, Spaulding KA, Kornegay JN. Tethered spinal cord and an intradural lipoma associated with a meningocele in a Manx-type cat. J Am Vet Med Assoc. 1993 Oct 15;203(8):1159-61.
Ricci E, Cherubini GB, Jakovljevic S, Aprea F, Cantile C. MRI findings, surgical treatment and follow-up of a myelomeningocele with tethered spinal cord syndrome in a cat. J Feline Med Surg. 2011 Jun;13(6):467-72.
Rossi A, Gandolfo C, Morana G, Piatelli G, Ravegnani M, Consales A, Pavanello M, Cama A, Tortori-Donati P. Current classification and imaging of congenital spinal abnormalities. Semin Roentgenol. 2006 Oct;41(4):250-73.
Sewell MJ, Chiu YE, Drolet BA. Neural tube dysraphism: Review of cutaneous markers and imaging. Pediatr Dermatol. 2015 Mar-Apr;32(2):161-70.
Shamir M, Rochkind S, Johnston D. Surgical treatment of tethered spinal cord syndrome in a dog with myelomeningocele. Vet Rec. 2001 Jun 16;148(24):755-6.
Song RB, Glass EN, Kent M, Sanchez MD, Smith DM, de Lahunta A. Surgical correction of a sacral meningomyelocele in a dog. J Am Anim Hosp Assoc. 2014 Nov-Dec;50(6):436-43.
Valentini LG, Selvaggio G, Erbetta A, Cordella R, Pecoraro MG, Bova S, Boni E, Beretta E, Furlanetto M. Occult spinal dysraphism: Lessons learned by retrospective analysis of 149 surgical cases about natural history, surgical indications, urodynamic testing, and intraoperative neurophysiological monitoring. Childs Nerv Syst. 2013 Sep;29(9):1657-69.
Westworth DR, Sturges BK. Congenital spinal malformations in small animals. Vet Clin North Am Small Anim Pract. 2010 Sep;40(5):951-81.
Wilson JW, Kurtz HJ, Leipold HW, Lees GE. Spina bifida in the dog. Vet Pathol. 1979 Mar;16(2):165-79.
download PDF

© 2022 Czech Academy of Agricultural Sciences | Prohlášení o přístupnosti