Tethered cord syndrome | Neural Tube Defects | Defect, Neural Tube | Defects, Neural Tube | Neural Tube Defect | Developmental Neural Tube Defects | Neural Tube Developmental Defects | Developmental Defects, Neural Tube | Craniorachischisis | Craniorachischises | Diastematomyelia | Diastematomyelias | Tethered Cord Syndrome | Tethered Cord Syndromes | Occult Spinal Dysraphism Sequence | Tethered Spinal Cord Syndrome | Occult Spinal Dysraphism | Dysraphism, Occult Spinal | Dysraphisms, Occult Spinal | Occult Spinal Dysraphisms | Spinal Dysraphism, Occult | Spinal Dysraphisms, Occult | Iniencephaly | Iniencephalies | Neurenteric Cyst | Cyst, Neurenteric | Cysts, Neurenteric | Neurenteric Cysts | Neuroenteric Cyst | Cyst, Neuroenteric | Cysts, Neuroenteric | Neuroenteric Cysts | Spinal Cord Myelodysplasia | Myelodysplasia, Spinal Cord | Myelodysplasias, Spinal Cord | Spinal Cord Myelodysplasias | Acrania | Acranias | Exencephaly | Exencephalies |