Hypodense white matter lesions in computed tomography of neurosarcoidosis.

Cerebral CT was performed on 32 patients with neurosarcoidosis and found to be abnormal in 13 (41%). One of the most common abnormalities (five patients) was represented by low density white matter lesions, which have not, to the best of our knowledge, been previously reported in association with neurosarcoidosis. Other types of abnormalities were ventricular enlargement (five patients) and mass lesions (four patients). Nineteen of the 32 patients had normal CT findings; thus normal CT does not exclude neurosarcoidosis. Nine magnetic resonance examinations carried out in seven patients failed to reveal more lesions than CT.