Midline mature teratoma inside a ruptured meningomyelocele of lumbosacral region, a case report.

Meningomyelocele (MMC) is very rarely associated with teratoma. Only few reports on the concurrence of a teratoma within a meningomyelocele have been published. The hypotheses of a possible common aetiology for this association include a single dysembryogenic process and neoplastic transformation of heterotopic primordial elements incorporated in the defect. We report an unusual case of midline mature teratoma which presented inside a ruptured lumbar meningomyelocele.