[Lumbosacral arachnoepiduritis. Clinical and etiologic aspects].

A series of 120 cases of lumbo-sacral arachno-epiduritis was studied from the clinical and etiological points of view. The recruitment of the cases and their classification were based on purely radiological criteria. The clinical symptoms were various, non-specific and without correlation with the radiological type. The course was chronic with a change in the distribution of the symptoms. The influence of the method of examination was discussed in the 9 cases discussed after a first myelography without surgical operation. All the forms suggesting epidural lesions were post-operative and observed mainly in cases of laminectomy.