1. Subarachnoid hemorrhage from ependymoma arising from filum terminale: report of a case Bull;Abbott;Los Angeles Neurol Soc,1939
2. Papilledema and spinal cord tumors;Ammerman;Surg Neurol,1975
3. Tumors of the lower spinal cord associated with increased intracranial pressure and papilledema;Arseni;J Neurosurg,1967
4. Ependimomi della cauda con stasi papillare;Beduschi;Chirurgia (Milano),1955
5. Double papilledema caused by blocking of cord at fourth cervical vertebra greatly relieved by operation;Davis;Arch Neurol Psych,1923