Figure 2.

[⁶⁸Ga]Ga-FAPI-04 and FDG PET/CT images in a 59-year-old woman with biopsy-proven metastatic left lung adenocarcinoma. [⁶⁸Ga]Ga-FAPI-04 PET/CT images revealed intensely tracer avid left hilar mass lesion ((B)—green arrow), multiple enlarged mediastinal ((A,C)—green arrows) lymph nodes, and bilateral adrenal metastases ((A,D)—green arrows depicting left adrenal lesion). Additionally, moderate left-sided pleural effusion with associated left lung lower lobe collapse was noted. Overall, FAPI PET/CT demonstrated higher tracer avidity and TBRs than FDG PET/CT ((E–H)—red arrows).