Figure 2.

Radioiodine-refractory metastatic differentiated thyroid cancer with positive lesions on [¹⁸F]FDG PET and [⁶⁸Ga]Ga-PSMA PET Legend: example of a 65-year-old female patient with lung metastases and lymph node neck metastases maximum intensity projection (MIP) of ¹²⁴I (left), [¹⁸F]FDG PET (middle), and [⁶⁸Ga]Ga-PSMAPET (right). No uptake is seen in the metastases on ¹²⁴I PET, and high uptake is seen in lung metastases on [¹⁸F]FDG and [⁶⁸Ga]Ga-PSMA PET. On [⁶⁸Ga]Ga-PSMA PET, lymph node metastases on the left side of the neck are also visible. The patient was treated with 2 cycles of 6 GBq [¹⁷⁷Lu]Lu-PSMA-617, unfortunately without an objective response.