In addition, recent studies have shown that SSTRs are preferably expressed in well-differentiated neoplasia and some advanced forms loose particular receptor subtypes while keeping others (9, 10); SSTRs subtypes can form homo/heterodimers at the membrane level, developing new receptors with different functional features (11), and that this receptor dimerization may be induced by addition of either dopamine or SST (Figure 1). Here, SST is linked to neoplasm.