FOLH1 and posterior cortical atrophy: However, the emergence and rapid worldwide adoption of PSMA PET imaging for PCa has produced many anecdotal reports of unintentional and potential confounding or false-positive PSMA ligand uptake in several cancers, such as lung, colorectal, gastric, pancreatic, and thyroid cancers, as well as sarcomas, lymphomas and other tumors [2].