Published online Apr 16, 2024. doi: 10.12998/wjcc.v12.i11.1947
Peer-review started: November 4, 2023
First decision: January 9, 2024
Revised: January 27, 2024
Accepted: March 12, 2024
Article in press: March 12, 2024
Published online: April 16, 2024
Processing time: 158 Days and 15.6 Hours
Schwannomas are rare peripheral neural myelin sheath tumors that originate from Schwann cells. Of the different types of schwannomas, pelvic sciatic nerve schwannoma is extremely rare. Definite preoperative diagnosis of pelvic schwannomas is difficult, and surgical resection is the gold standard for its definite diagnosis and treatment.
We present a case of pelvic schwannoma arising from the sciatic nerve that was detected in a 40-year-old man who underwent computed tomography for intermittent right lower back pain caused exclusively by a right ureteral calculus. Subsequently, successful transperitoneal laparoscopic surgery was performed for the intact removal of the stone and en bloc resection of the schwannoma. The total operative time was 125 min, and the estimated blood loss was inconspicuous. The surgical procedure was uneventful. The patient was discharged on postoperative day 5 with the simultaneous removal of the urinary catheter. However, the patient presented with motor and sensory disorders of the right lower limb, caused by partial damage to the right sciatic nerve. No tumor recurrence was observed at the postoperative appointment.
Histopathological examination of the specimen confirmed the diagnosis of a schwannoma. Thus, laparoscopic surgery is safe and feasible for concomitant extirpation of pelvic schwannomas and other pelvic and abdominal diseases that require surgical treatment.
Core Tip: Schwannomas are rare peripheral neural myelin sheath tumors originating from Schwann cells. Pelvic sciatic nerve schwannoma is extremely rare. The clinical manifestations of pelvic schwannomas may be asymptomatic, viscerally oppressive, or neurological due to compression or invasion of the original nerves. Definite preoperative diagnosis of pelvic schwannomas is difficult, and surgical resection is the gold standard for definite diagnosis and treatment. We present a case of pelvic schwannoma arising from the sciatic nerve that was detected in a 40-year-old man who underwent computed tomography for intermittent right lower back pain caused exclusively by a right ureteral calculus. Subsequently, successful transperitoneal laparoscopic surgery was performed for the intact removal of the stone and en bloc resection of the schwannoma. Laparoscopic surgery is safe and feasible for concomitant extirpation of pelvic schwannomas and other pelvic and abdominal diseases that require surgical treatment.