CT – Degenerative lumbosacral stenosis with intervertebral disc protrusion in an intact dog

Case Study

CT – Degenerative lumbosacral stenosis with intervertebral disc protrusion in an intact dog

This dog has a history of ataxia, left hindlimb weakness/neuropathy with CP deficits. Has been on prednisone, deramaxx, gabapentin at various times with some improvement then worsening. 

CBC/Chem wnl

This dog has a history of ataxia, left hindlimb weakness/neuropathy with CP deficits. Has been on prednisone, deramaxx, gabapentin at various times with some improvement then worsening. 

CBC/Chem wnl

Image Interpretation

CT of the thoracic and lumbar spine, plain and post contrast – There are 8 lumbar vertebrae. The intervertebral disc between L7 and L8 reveals moderate protrusion into the ventral epidural space. The ventral epidural fat is diminished, mild dorsal deviation of the dural tube is noted.
Mild to moderate signs of ventral non-bridging spondylosis is noted within the mid-thoracic spine. No compressive myelopathy is evident here. Leftsided facet joint arthropathy with small cystic defects within the joint surface are noted on the left side at L5/6 and L6/7. This is likely an incidental finding.

DX

The Computed Tomography reveals a moderate degenerative lumbosacral stenosis with a chronic intervertebral disc protrusion at L7/8 and a lumbosacral transitional vertebra.

Outcome

No other site of compressive myelo- or neuropathy is noted. The CT findings need to be correlated with the clinical presentation. Consider further workup in case the described findings do not fully explain the clinical signs. A myelogram or MRI would be ideal to rule out other underlying causes to compressive or infiltrative myelopathy/neuropathy

Clinical Differential Diagnosis

IVVD vs neoplasia vs neuropathy (myopathy)

Patient Information

Patient Name : Jedda Blanton/Blugrass VS
Type of Imaging : Ultrasound
Status : Complete
Liz Wuz Here : Yes

Clinical Signs

  • Lameness

Exam Finding

  • Neurologic signs
  • Proprioceptive deficits (or CP deficits)

Images

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Clinical Signs

  • Lameness