SUPERFICIAL SIDEROSIS OF THE CENTRAL-NERVOUS-SYSTEM

Two patients with superficial siderosis of the central nervous system are reported, Both developed progressive deafness over many years; one with associated anosmia and partial seizures; the other with progress ive ataxia and diplopia, The cerebrospinal fluid was xanthochromic In one and the protein was raised in both, Magnetic resonance imaging rev ealed a hypodense rim around the eighth cranial nerve, cerebellum, bra in stem and spinal cord. Despite extensive investigations the cause of the superficial siderosis in both patients remains undetermined.