Intradermal dermoid cyst associated with occult spinal dysraphism.

A 2-year-old boy with congenital lumbosacral skin lesions is described. He presented with associated occult spina bifida and a sagittal cleft of the vertebral body deep in the skin lesions. The skin lesions presented as a combination of a lipoma, telangiectasia, mild hypertrichosis, and a dermoid cyst. Magnetic resonance imaging (MRI) revealed that the lipoma extended to the spina bifida region, but that it did not connect to the dura. MRI also demonstrated no other spinal lesions requiring surgical treatment. The intradermal location of the dermoid cyst observed in our patient was unusual. We discuss the location of dermoid cysts in the lumbosacral region associated with spinal dysraphism.