Transient Enlargement in Meningiomas Treated with Stereotactic Radiotherapy.

ABSTRACT: To investigate the occurrence of pseudoprogression/transient enlargement in meningiomas after stereotactic radiotherapy (RT) and to evaluate recently proposed volumetric RANO meningioma criteria for response assessment in the context of RT. Sixty-nine meningiomas (benign: 90%, atypical: 10%) received stereotactic RT from January 2005-May 2018. A total of 468 MRI studies were segmented longitudinally during a median follow-up of 42.3 months. Best response and local control were evaluated according to recently proposed volumetric RANO criteria. Transient enlargement was defined as volumetric increase ≥20% followed by a subsequent regression ≥20%. The mean best volumetric response was -23% change from baseline (range, -86% to +19%). According to RANO, the best volumetric response was SD in 81

SUBMITTER: Maksoud Z 

PROVIDER: S-EPMC8946188 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature