Intrapelvic malignant schwannoma resected transsacrally

Malignant schwannoma arising in the retroperitoneum is rare. A 68-year-old man underwent transsacral resection for an intrapelvic tumor which proved to be a malignant schwannoma. The transsacral approach is simple and effective, and should be considered for primary management of retrovesicular and retroprostatic tumors.