TSPO and neoplasm: On the other hand, TSPO might be exploited for theranostic approaches, employing a couple of radiopharmaceuticals with similar or identical chemical properties and both directed towards a tumor-associated biomarker, the first labeled with radionuclide-emitting energy suitable for imaging and the other one conjugated with radioisotope-emitting particles to exert anti-tumor effects [39,40,41].