A pelvic retroperitoneal schwannoma arising in the right paracolpium.

Nerve sheath tumors of the retroperitoneum are infrequently reported. In this paper, a rare case of a benign pelvic retroperitoneal schwannoma arising in the right paracolpium is presented. Preoperatively, magnetic resonance imaging revealed a solid tumor beside the vaginal canal with a clear margin. The tumor could be completely resected by the transvaginal approach and was diagnosed to be a benign schwannoma of the Antoni A type with palisade arrangement. The patient had no symptoms of motor or sensory disturbances after surgery.