Dorsal thoracic arachnoid web

Case contributed by Muthu Magesh
Diagnosis possible

Presentation

Suspected subacute combined degeneration, MRI for entire spine with T2 screening of dorsal spine was requested

Patient Data

Age: 35 years
Gender: Male

Thoracic spine

mri

Focal anterior displacement of the spinal cord with asymmetric dented appearance and widening of dorsal subarachnoid space noted at D5-D6 level.

Case Discussion

Mild dorsal indentation and anterior displacement of the thoracic spinal cord with a silhouette of surgical scalpel seen.

Differentials considered: 

  1. ventral cord herniation
  2. spinal arachnoid cyst

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