SSTR2 and digestive system neuroendocrine tumor, grade 1/2: Abbreviations: CT = computed tomography, GEP-NET = gastroenteropancreatic neuroendocrine tumor, LAM = lymphangiomyomatosis, MR = magnetic resonance, NET = neuroendocrine tumor, PRMC = primary retroperitoneal mucinous cystadenocarcinoma, SSA = somatstatin analogue, SSTR2 = somatostatin receptor 2.