Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250
Surgery
Encapsulated gas accumulation in the spinal canal: Pneumorrhachis in two dogs
Shintaro KIMURAKohei NAKATAAsuka SUBETakashi KUNIYANaoyuki WATANABEKayoko YONEMARUSadatoshi MAEDAHiroaki KAMISHINA
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JOURNAL OPEN ACCESS

2020 Volume 82 Issue 9 Pages 1354-1357

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Abstract

A 17-year-old mongrel dog and 12-year-old Shiba Inu dog presented with ataxia and paresis of the pelvic limbs, respectively. Gas accumulation within the spinal canal adjacent to the herniated disc was suspected in both cases. Since the gas remained accumulated for a prolonged period, hemilaminectomy was performed to decompress the spinal cord. The bulged external lamina of the dura matter was removed and histopathologically examined. Granulomatous inflammation and hyperplasia of fibrous connective tissues was noted, suggesting that the gas was encapsulated and the fibrous nodules made reabsorption difficult. Clinical signs resolved post-surgery. This is the first report describing histopathological features of pneumorrhachis in dogs. The accumulated gas was successfully removed by surgery. Postoperative course remained uneventful in both cases.

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