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Retroperitoneal neurilemoma: CT and MR findings
1Department of Radiology, Seoul National University College of Medicine, Korea.
Objective:
Our objective was to characterize the CT and MR imaging findings of retroperitoneal neurilemomas.
Materials And Methods:
We reviewed the CT and MR imaging findings in six women with retroperitoneal neurilemomas.
Results:
Retroperitoneal neurilemomas were round, 5-13 cm in diameter, and located in the presacral pelvic retroperitoneum in four patients and adjacent to the kidney in two patients. CT findings of the tumors were well-demarcated round masses showing prominent cystic changes and oriented in a somewhat radial fashion. Medium and heavily T2-weighted MR images showed high-intensity necrotic areas and nonnecrotic areas of various signal intensity.
Conclusion:
CT findings of a round mass with prominent cystic degeneration, along with certain MR imaging characteristics, may be helpful in the preoperative diagnosis of retroperitoneal neurilemomas.