Executive summary

Pseudoprogression (PsP) is a recognized phenomenon after radiotherapy (RT) for glioma. This study evaluated 83 pediatric low-grade glioma (LGG) patients treated with IMRT (39%) and PBT (61%), and found that 37% patients scored PsP including IMRT patients (25%) and PBT patients (45%). Local progression occurred in 10 patients: 7 IMRT patients (22%) and 3 PBT patients (6%), with a trend toward improved local control for PBT patients.

This study concluded that there was substantial rates of PsP among pediatric LGG patients, particularly those treated with PBT. PsP should be considered when assessing response to RT in LGG patients within the first year after RT.

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