Lumbar Intramedullary Epidermoid Following Repair of Sacral Myelomeningocele and Tethered Cord: A Case Report With a Review of the Relevant Literature and Operative Nuances.

Epidermoid cysts of the spine are rare tumors. While the majority of them occur spontaneously, in very few cases, they can occur following previous surgery for spinal dysraphism. Such tumors tend to occur at the site of previous surgery. The occurrence of an epidermoid cyst at a level higher than the previous surgical site is a rare entity. We present a rare case of a lumbar intramedullary and extramedullary epidermoid occurring at a level higher than the previous surgical site, along with a discussion of the causes of such an occurrence and operative nuances regarding the management of an intramedullary epidermoid in a pediatric patient.