Neoplasm MicrometastasisNeuroendocrine TumorsCarcinoma, NeuroendocrineLymph NodesLymphatic MetastasisStomach NeoplasmsPancreatic NeoplasmsCarcinoid TumorSentinel Lymph Node BiopsyGastrointestinal NeoplasmsChromogranin ATumor Markers, BiologicalNeoplasm MetastasisLymph Node ExcisionBone Marrow NeoplasmsNeoplasm StagingPrognosisNeoplasm InvasivenessImmunohistochemistryBreast NeoplasmsAdenocarcinomaAxillaKeratinsLIM-Homeodomain ProteinsLung NeoplasmsCarcinomaGastrectomyReverse Transcriptase Polymerase Chain ReactionNeurosecretory SystemsRetrospective StudiesLymphSurvival RateKeratin-20Carcinoma, Squamous CellFrozen SectionsSurvival AnalysisKeratin-19Colorectal NeoplasmsLiver NeoplasmsCell Line, TumorNeoplasm Recurrence, LocalHematoxylinSensitivity and SpecificityMice, NudeGene Expression Regulation, NeoplasticNeuroendocrine CellsThyroid NeoplasmsEsophageal NeoplasmsMelanomaRNA, MessengerSkin NeoplasmsDisease-Free SurvivalImmunoenzyme TechniquesCarcinoma, PapillaryFollow-Up StudiesVascular Endothelial Growth Factor CNeoplasm TransplantationPredictive Value of TestsBile Duct NeoplasmsDisease ProgressionProstatic NeoplasmsNeoplastic Cells, CirculatingCarcinoembryonic AntigenMammaglobin BTreatment OutcomeNeoplasmsNeoplasm ProteinsNeck DissectionMultivariate AnalysisAdenocarcinoma, PapillaryLymphatic VesselsLymphangiogenesisKaplan-Meier EstimateChemotherapy, AdjuvantTransplantation, HeterologousCarcinoma, Signet Ring CellAdenocarcinoma, MucinousNeckTomography, X-Ray ComputedTumor Cells, CulturedNeoplasms, Multiple PrimaryMouth NeoplasmsTime FactorsColonic NeoplasmsMediastinumVascular Endothelial Growth Factor DCarcinoma, Ductal, BreastCell MovementTissue Array AnalysisDNA, NeoplasmGastric MucosaRectal NeoplasmsHead and Neck NeoplasmsUterine Cervical NeoplasmsAntibodies, MonoclonalTongue NeoplasmsAntigens, NeoplasmOvarian NeoplasmsCell ProliferationNeovascularization, Pathologic