Figure 1

Male, 39 years, with a recurrent anaplastic astrocytoma IDH wildtype grade III in the right parieto-occipital lobe. Three years after surgery, and 15 months after local radionuclide therapy with [213Bi]Bi-DOTA-SP, a contrast-enhanced mass around the surgical cavity was detected with MR. [68Ga]Ga-PSMA-11 accumulation in the tumor was found with the SUVmax 4.9, SUVmean 3.3, TBR 70 and TLR 0.8 (a—contrast-enhanced T1WI, b—DWI, c—PET transverse image, d—fused PET/CT transverse image, e—maximal intensity projection, f—PET sagittal image, g—fused PET/CT sagittal image).