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A pseudoprogression case after chemoradiotherapy. An axial, Gd-contrast-enhanced T1-weighted image before chemoradiotherapy (A); 4 and 12 weeks after radiotherapy and concomitant temozolomide showing increased enhancement (B and C), raising the possibility of progressive disease; after additional 18, 28, 43, 50, 64 weeks of treatment (D–H) with adjuvant temozolomide after radiotherapy, showing a steady decrease in the Gd-enhancing lesion –typical pseudoprogression.
