obsolete malformation of the neurenteric canal, spinal cord and column syringomyelia primary syringomyelia https://www.malacards.org/card/primary_syringomyelia icd11.foundation:257905685 MONDO:0020508 UMLS:C1299627 MEDGEN:721465 SCTID:371076006 GARD:0019691 Orphanet:99856 congenital syringomyelia