Presentation
Vague dorsal pain, past history of fall.
Patient Data
Age: 65 years
Gender: Male
From the case:
Dorsal thoracic arachnoid web
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Focal prominence of the posterior CSF space at the D4-5 level with the preservation of normal CSF flow artefact. Mild compression of the cord at this level with ventral displacement. No obvious signal changes in the cord.
Cystic lesion, measuring 9 x 18 mm along the right D11-12 neural foramina causing its expansion and indenting the thecal sac on the right lateral aspect.
Marginal osteophytes are arising from vertebral bodies.
Case Discussion
Findings are consistent with a dorsal thoracic arachnoid web at the D4-5 level showing the 'scalpel sign'.
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