Sacrococcygeal teratoma with intradural extension: case report.

Intradural sacrococcygeal teratoma (SCT) is a rare entity that has been reported in only a few cases previously. The authors present the case of a 2-week-old, otherwise healthy neonate with a mass in the buttock. The imaging findings and the high level of serum alpha-fetoprotein were highly suggestive of SCT. On operation the authors found intradural extension of the teratoma. The lesion was managed successfully without any remaining sequelae. The authors briefly review the currently proposed etiology regarding teratoma formation and the intradural extension of SCT.