malformations almost always associated with spina bifida aperta or occulta : 183 myelomeningocele ( mm ) , 32 meningocele ( m ) , 35 lipomm and lipoma , 19 dermoid cyst , six occult meningocele , two pacinian hamartoma , one short filum , four hindgut cysts or sinuses , two tailgut cysts , and two epithelial heterotopia .
C0011649
dermoid
C0010709
cysts