Concomitant treatment of ureteral calculi and ipsilateral pelvic sciatic nerve schwannoma with transperitoneal laparoscopic approach: A case report

Core Tip

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.