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  • Title: Spontaneous regression of lumbar Hansen type 1 disk extrusion detected with magnetic resonance imaging in a dog.
    Author: Steffen F, Kircher PR, Dennler M.
    Journal: J Am Vet Med Assoc; 2014 Mar 15; 244(6):715-8. PubMed ID: 24568114.
    Abstract:
    CASE DESCRIPTION: A 3-year-old French Bulldog was evaluated because of acute signs of back pain and spastic paraparesis. CLINICAL FINDINGS: Neuroanatomic localization indicated a lesion in the T3-L3 spinal cord segment. Magnetic resonance imaging revealed extradural spinal cord compression at the ventral right aspect of the intervertebral disk space L3-4. On the basis of these findings, a diagnosis of sequestrated Hansen type 1 disk extrusion without extradural hemorrhage was made. TREATMENT AND OUTCOME: The dog was treated conservatively with cage rest, restricted exercise on a leash, and NSAIDs. Results of follow-up examination 5 weeks later indicated complete resolution of clinical signs, and results of repeated MRI indicated a 69% reduction in the volume of the herniated disk material. CLINICAL RELEVANCE: Findings for the dog of this report indicated spinal cord compression attributable to extruded intervertebral disk material resolved. Functional improvements in dogs with such problems may be partly attributable to spontaneous regression of intervertebral disk extrusions.
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