A Rare Cause of Pelvic Mass: Presacral Giant Schwannoma – A Case Report

Background:Presacral schwannomas are extremely rare benign tumors arising from Schwann cells of peripheral nerves. Their deep pelvic location poses significant diagnostic and surgical challenges due to proximity to critical neurovascular structures. Case presentation:We present a case of a 57-year-old postmenopausal woman with a large presacral schwannoma successfully managed through complete surgical excision using a multidisciplinary approach. During the preoperative evaluation, MRI suggested possible local invasion, leading to a joint operation with the neurosurgery team. This collaboration enabled safe dissection and complete tumor removal while minimizing neurological risks. Conclusion: This case underscores the importance of detailed preoperative imaging, intraoperative neuromonitoring, and multidisciplinary collaboration for achieving optimal outcomes in the management of presacral schwannomas.