title: Description of two informative cases of occult spinal dysraphism with remarks on possible traits in the embryogenesis.
abstract: Two cases of spinal occult dysraphism are described. The association of a dermoid cyst and ectopic tissue foci of both ecto- and mesodermal origin at the junction zone between lipoma and nervous tissue is argued to support the disjunction theory on lipomeningomyelocele formation.
authors.affiliation: Division of Neurosurgery, Department of Neurology, Linköping, Sweden.
authors.forename: J
authors.initials: J
authors.lastname: Hillman
authors.forename: O
authors.initials: O
authors.lastname: Bynke
mesh_terms: D001842:Bone and Bones; D002648:Child; D002828:Choristoma / Q000000981:diagnostic imaging / Q000473:pathology; D003884:Dermoid Cyst / Q000473:pathology; D005260:Female; D006801:Humans; D007223:Infant; D008067:Lipoma / Q000473:pathology; D008591:Meningomyelocele / Q000473:pathology; D009192:Myelography; D016136:Spina Bifida Occulta / Q000000981:diagnostic imaging* / Q000196:embryology*; D013120:Spinal Cord Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed