PURPOSE: We evaluated the survival rate, prognostic factors and patterns of failure in malignant and @entity1653 , and investigated the role of radiation therapy in the treatment of these @entity5 . MATERIALS AND METHODS: We retrospectively reviewed nineteen @entity1 treated at Asan Medical Center between Mar. 1994 and @entity1178 . 2000 with histologically confirmed @entity5 . The median @entity1 age was 52 years. The extent of surgery prior to radiation was gross total resection in 13 and subtotal resection in 6. Eleven @entity1 were referred for radiation immediately after diagnosis and the remainder after at least one recurrence. All @entity1 received megavoltage radiation to a median dose of 55.8 Gy. The median follow-up period was 41 months. RESULTS: Eleven @entity1 (57.9%) showed no evidence of disease, five @entity1 died of @entity1653 and three were alive with disease. The 5-year overall and relapse-free survivals were 75.9 and 50.6%, respectively. There were no statistically significant prognostic factors found to be associated with relapse-free survival by univariate or multivariate analysis. During the follow-up period, no significant treatment-related complications were detected. CONCLUSION: The major patterns of failure were in-field recurrence. In order to reduce local failure, a higher radiation dose may be needed and a high precision therapy should be considered.

Treatment Results of Postoperative Radiation Therapy for Malignant and XXXX .

@entity5 :: ('MESH:D009369', 'Disease') :: ['malignant or atypical meningiomas', 'tumors'] @entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity1653 :: ('MESH:D008579', 'Disease') :: ['meningioma', 'atypical meningiomas'] @entity1178 :: ('3725', 'Gene') :: ['Jun']
@entity1653 :: (MESH:D008579,Disease) :: ['Atypical Meningioma']
