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Spinal Arachnoiditis Ossificans: A Case-Based Update.

Anna Brunner1, Marlene Leoni2, Sandro Eustacchio1

  • 1Department of Neurosurgery, Medical University Graz, Graz, Austria.

Surgery Journal (New York, N.Y.)
|July 26, 2021
PubMed
Summary
This summary is machine-generated.

Arachnoiditis ossificans, a rare condition causing bone formation within the spinal canal, was observed with yellow bone marrow. This finding in a cauda equina syndrome patient offers new insights into the disease.

Keywords:
arachnoiditis ossificanscauda equina syndromespinal surgeryyellow bone marrow

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Area of Science:

  • Neurology
  • Pathology
  • Spinal Surgery

Background:

  • Arachnoiditis ossificans is a rare, advanced stage of chronic adhesive arachnoiditis.
  • It involves intradural ossifications, leading to severe neurological deficits.

Observation:

  • A 55-year-old patient presented with cauda equina syndrome post-lumbar microdiscectomy.
  • Exploratory surgery revealed an intradural concentric bony structure encasing nerve roots.

Findings:

  • Histological analysis of the removed ossification confirmed normal bone tissue.
  • Notably, the presence of yellow bone marrow within the ossification was identified.

Implications:

  • This is the first reported instance of yellow bone marrow in arachnoiditis ossificans.
  • Understanding the composition of these ossifications may refine treatment strategies for spinal stenosis.