Subcutaneous Myxopapillary Ependymoma in the Coccygeal Region

Abstract

A 10-year-old boy felt discomfort on the coccygeal region from his age of 6 and had noted a tumor on the region for one year. He saw us because the tumor was enlarging late. The subcutaneous tumor 4×2cm in size was not connected with spinal cord on computed tomography images and was totally resectable. Pseudorosettes were formed by tumor cells, which were strongly positive for glial fibrillary acidic protein (GFAP) and vimentin, and focally positive for S-100 protein. Myxopapillary ependymoma was diagnosed according to those features. No recurrence was evident one year after the resection.