Carcinoma, NeuroendocrineCarcinoma, Large CellCommon Bile Duct NeoplasmsNeuroendocrine TumorsAmpulla of VaterCarcinoma, Small CellFatal OutcomeCarcinoid TumorLung NeoplasmsImmunohistochemistryTumor Markers, BiologicalGenes, p16MyosarcomaTomography, X-Ray ComputedPrognosisCarcinomaBiopsyNeoplasms, Multiple PrimaryNeurosecretory SystemsCarcinoma, Merkel Cell