Pseudoprogression of vestibular schwannomas after fractionated stereotactic radiation therapy

摘要

Objectives Local tumor control after radiation of vestibular schwannomas (VS) is assessed by follow-up magnetic resonance imaging (MRI) of the brain. Transient increases in tumor volume on MRI due to radiation can mimic tumor progression but are related to radiation treatment effects known as “pseudoprogression”. Our study aims to determine the presence and impact of pseudoprogression in VS patients treated with fractionated stereotactic radiotherapy.