Figure 2: Example of pseudoprogression after vaccination.
(A) T1-weighted contrast-enhanced magnetic resonance image (MRI) from a 59-year-old patient with biopsy-proven glioblastoma before vaccination.
(B) Eight weeks after vaccination, a significant increase in contrast enhancement was shown.
(C) On a follow-up MRI 24 weeks later, a significant reduction was observed in the enhancing lesions.