Neuroendocrine TumorsPancreatic NeoplasmsCarcinoma, NeuroendocrineVipomaGlucagonomaChromogranin AGastrinomaOctreotidevon Hippel-Lindau DiseaseInsulinomaMultiple Endocrine Neoplasia Type 1SomatostatinomaCarcinoma, Islet CellPyrrolesCarcinoid TumorPancreaticoduodenectomyReceptors, SomatostatinEndosonographyIndolesSirolimusPancreasImmunohistochemistryGastrointestinal NeoplasmsNeurosecretory SystemsSomatostatinLiver NeoplasmsNeuroendocrine CellsTomography, X-Ray ComputedTumor Markers, BiologicalDigestive System NeoplasmsAntineoplastic AgentsTreatment OutcomeChromograninsPancreatectomyPancreatic CystPrognosisRetrospective StudiesIntestinal NeoplasmsIleal NeoplasmsEndocrine Gland NeoplasmsBronchial NeoplasmsRadiopharmaceuticalsParagangliomaPheochromocytomaOrganometallic CompoundsTumor BurdenCell Line, Tumor