The human tail: rare lesion with occult spinal dysraphism--a case report.

Human tail or tail-like caudal cutaneous appendage is a rare fingerlike, midline protrusion at the lumbosacrococcygeal region, often associated with occult spinal dysraphism. A 2-month-old male child presented here had a lumbosacral tail-like appendage with underlying spinal dysraphism without any appreciable neurological deficit. In contradiction to a previous report, true vestigial tails are not benign because they may be associated with underlying dysraphic state. About 50% of the cases were associated with either meningocele or spina bifida occulta. Management of such lesions must include complete neurological history and examination as well as magnetic resonance or computed tomographic imaging. After diagnosis, microsurgery should be performed if there is any intraspinal component to avoid any damage and neurological deficit.