CT demonstration of sarcoidosis of the optic nerve, frontal lobes, and falx cerebri: case report and literature review.

Sarcoidosis of the optic nerve is reported in 1 %-5% of sarcoid patients [1]. Even though it is the second most frequently affected cranial nerve in this disease [1, 2], its involvement has not been demonstrated previously by computed tomography (CT) [3-12]. In addition, despite pathologic descriptions of granulomatous infiltration of the falx [13, 14], transfalcine spread of sarcoidosis has not been described in the CT literature [3-12]. We report a patient with surgically and pathologically proven neurosarcoidosis whose CT scans showed involvement of the optic nerve, falx, and frontal lobes. We also review the CT literature of neurosarcoidosis.