title: Meningeal neurosarcoidosis mimicking convexity en-plaque meningioma.
abstract: A 34-year old man presented with headaches. Computed tomography scanning revealed an enhancing subdural mass extending from the skull base to the convexity, thought to represent an en-plaque meningioma. Pathologic study revealed extraaxial subdural granulomatous inflammation consistent with neurosarcoidosis.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006261:Headache / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008578:Meninges / Q000000981:diagnostic imaging* / Q000473:pathology; D008579:Meningioma / Q000000981:diagnostic imaging* / Q000473:pathology; D012507:Sarcoidosis / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed