Neurosensory hearing loss, ataxia, spastic paraparesis, sphincter dysf
unction, somatosensory disturbances, and cognitive effects are associa
ted with superficial siderosis of the central nervous system caused by
chronic intrathecal bleeding, We describe superficial siderosis that
developed more than a decade following traumatic brachial nerve root a
vulsion. While cerebrospinal fluid analysis indicated chronic intrathe
cal bleeding, angiography did not localize a specific source, Surgical
intervention that included repair of a meningeal diverticulum and ven
ous cauterization resulted in overall reduction, but not complete elim
ination, of central nervous system bleeding.