“…1 Dorsal dermal sinus, thickened filum terminale, diastematomyelia, caudal regression syndrome, intradural lipoma, lipomyelocele, lipomyelomeningocele, anterior spinal meningocele, and other forms of myelodysplasia that can occur in any combination form the occult spinal dysraphism spectrum. 2 These might not be diagnosed at birth, but most dysraphic conditions of the spine become apparent in childhood or adolescence. 3 Of the many cutaneous stigmata of occult spinal dysraphism, a dermal sinus is especially significant because, it is an external marker of a possible intradural pathology and also provides a channel for bacterial contamination resulting in local infection, meningitis and/or intramedullary abscess.…”