1. Congenital intraspinal extradural cyst;Bergland,1968
2. Idiopathic thoracic intradural and extradural arachnoid diverticula;Cilluffo,1982
3. Congenital spinal extradural cysts: case report with review of literature;Cloward;Ann Surg,1968
4. Spinal extradural cyst and kyphosis dorsalis juvenilis;Cloward;AJR,1937
5. Kystes Méningés extra-duraux rachidiens;Combelles,1983