Abstract
A 68-year-old patient suffered for 8 years from radicular S1 pain on the left side, which was aggravated by walking. After an increased effort, he experienced a violent dorsal pain and sensitive troubles in the left T1 and T2 territories. Low back pain and painful paresthesiae of right leg came on next. Physical examination revealed proprioceptive symptoms on the left, a left pyramidal syndrome and a sacral pilonidal sinus. MRI showed on level of L2 vertebra, a spinal cord duplication in a unique dural tube, corresponding to diplomyelia or split cord malformation (SCM) type II. The patient had low conus medullaris anchored on L3-L4 level. A syringomyelia surmounted this medullar dysraphia. Split cord malformations, SCM type I (diplomyelia) or SCM type II (diastematomyelia), are usually revealed in infancy or early childhood. They are very rarely discovered late in the life. With progress in noninvasive spinal cord imaging, such diagnoses will undoubtedly be made more often in adults.
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