TSPO and neoplasm: Although not specifically targeting TAMs, Wu and colleagues carried out a study in 2014 in which they used N, N-Diethyl-2-(2-(4-(2-[18F] fluoroethoxy) phenyl)-5, 7-dimethylpyrazolo [1, 5-a] pyrimidin-3-yl) acetamide ([18F]-DPA-714), a tracer targeting TSPO, to differentiate inflammation from tumor [48].