Surgical resection of retroperitoneal neurilemmoma adjacent to complex blood vessels: a report of 2 cases

Objective To analyze the clinical diagnosis and treatment of two cases of retroperitoneal neurilemmoma with severe compression of inferior vena cava and right renal vein. Methods Preoperative diagnosis by 3D reconstruction and other imaging examinations were made. Then surgical treatment, postoperative pathological diagnosis and follow-up were preformed in 2 patients. Results The tumours were resected completely in 2 cases without peripheral blood vessels and viscera injury. The postoperative pathology was retroperitoneal neurilemmoma. No recurrence was found at follow-up. Conclusion Retroperitoneal schwannoma is rare and difficult to diagnose before operation. The large benign tumors adjoining complex blood vessels can still be resected completely, and there is good prognosis and low recurrence rate. Key words: Neurilemmoma; Retroperitoneal neoplasms; Vena cava, inferior; surgery; Diagnosis