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J Vet Diagn Invest. 2019 Mar;31(2):294-297. doi: 10.1177/1040638719827626. Epub 2019 Feb 8.

Dermoid sinus type VI associated with spina bifida and tethered cord syndrome in a French Bulldog.

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School of Veterinary Science, Massey University, Palmerston North, New Zealand.


A 4-mo-old French bulldog was presented with acute onset pain and reluctance to move. A tubular structure arising in the dorsal thoracic midline and extending from a cutaneous orifice into deeper tissues was palpated on physical examination. Computed tomography with sinography revealed a dermoid sinus associated with spina bifida at the level of T3-T4. On surgical exploration, the dermoid sinus was found to communicate with the dura. Histology confirmed the diagnosis and classification as a type VI dermoid sinus. The pain response and hyperesthesia were suspected to be the result of tethered cord syndrome. Complete resolution of clinical signs was appreciated post-surgery, with the patient still free of clinical signs 3 mo later.


Dermoid sinus type VI; French Bulldogs; spina bifida; tethered cord syndrome

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