Neuroendocrine tumors (NETs) are relatively rare tumors, mainly originating from the digestive system, able to produce bioactive amines and hormones. NETs tend to be slow growing and are often diagnosed when metastatic. Treatment is multidisciplinary and should be individualized according to the tumor type, burden, and symptoms. Therapeutic tools include surgery, interventional radiology, and medical treatments such as somatostatin analogues, interferon, chemotherapy, new targeted drugs (everolimus, sunitinib) with radiolabelled somatostatin analogues. Despite the options available, antiproliferative treatment options for patients with inoperable gastro-entero-pancreatic (GEP) NETs are limited.