Laparoscopic nephrectomy for giant benign renal schwannoma: a case report and review of literature.

Benign giant renal schwannoma is rarely found and the diagnosis difficulty only depends on physical and imagological examination. Pathological examination is essential to confirm the diagnosis of renal schwannoma. Nephrectomy and tumorectomy are primary treatments for renal schwannoma. Although most of the reported patients present satisfactory outcome, however, there is still not sufficient evidence to reveal the biological characteristics and post-operation recurrence rate of renal schwannoma. Herein, we report a rare case of giant and complicated renal schwannoma. A 56-years-old female patient was admitted to the urology department due to left lower back pain for approximately 5 days. No positive signs and other special abnormalities were found. CT scan presented a soft tissue tumor with inhomogeneous enhanced in the renal hilum. Surgery was performed to excise the tumor and left renal. Renal schwannoma was confirmed by pathological examination. At the 6-month follow-up, no evidence of recurrence was found. Our present report could provide more material for further study.