SST and malignant adrenal gland pheochromocytoma: Since 2000, patients with somatostatin receptor-positive metastatic, inoperable GEP-NETs and malignant pheochromocytomas have been treated with the radiolabeled somatostatin analogue [177Lu-DOTA0, Tyr3] octreotate (177Lu-octreotate).