Sacrococcygeal teratoma with an intradural and extramedullary extension in a neonate: case report.

Abstract

The intradural extension of a sacrococcygeal teratoma is rare and has been reported previously in only two cases. We present a case of a sacrococcygeal teratoma with an intradural and extramedullary extension. The patient was a full-term female infant, born with a sacral mass. Ultrasonography, computed tomography, and magnetic resonance imaging showed an intraspinal extension. The operation confirmed the extension of the mass up to the T4 level, and total tumor removal was achieved. The pathological examination showed a mature teratoma. The postoperative course was uneventful, and at the 3-year follow-up examination, the patient had experienced normal growth without deficit in the lower limbs but had a neurogenic bladder. Magnetic resonance imaging disclosed no tumor recurrence. This case represents the third case in the literature of an intradural extension of a sacrococcygeal teratoma and the first one with an extramedullary component so extensive.