CT FEATURES OF RETROPERITONEAL NEURILEMOMA

Purpose: The aim of this study was to characterize the CT features of retroperitoneal neurilemmoma. Methods: The CT findings were reviewed i n seven patients with retroperitoneal neurilemmoma. Results: All of th e tumours were well-demarcated round or oval masses. In five cases, he terogeneous contrast enhancement was noted after contrast medium admin istration. Areas of minimal enhancement reflected diffuse edema in one tumour. Areas without definite enhancement represented prominent cyst formation in three tumours. There were three cases with tumour calcif ication (two with punctate calcification and one with mottled calcific ation). Conclusion: CT findings may suggest the diagnosis of retroperi toneal neurilemmoma preoperatively. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.