Neoplasm MicrometastasisStomach NeoplasmsBone Marrow NeoplasmsLymphatic MetastasisSentinel Lymph Node BiopsyKeratinsLymph NodesNeoplasm StagingGastrectomyNeoplasm MetastasisPrognosisNeoplasm InvasivenessAdenocarcinomaImmunohistochemistryKeratin-20Breast NeoplasmsReverse Transcriptase Polymerase Chain ReactionTumor Markers, BiologicalLung NeoplasmsFrozen SectionsHematoxylinMice, NudePancreatic NeoplasmsCell Line, TumorSurvival AnalysisKeratin-19Lymph Node ExcisionCarcinomaMammaglobin BNeoplasmsSurvival RateHelicobacter pyloriRetrospective StudiesEarly Detection of CancerGene Expression Regulation, NeoplasticGastric MucosaNeoplastic Cells, CirculatingHelicobacter InfectionsSensitivity and SpecificityRNA, MessengerCarcinoembryonic AntigenColorectal NeoplasmsLiver NeoplasmsNeoplasm Recurrence, LocalFollow-Up StudiesAxillaProstatic NeoplasmsNeoplasm TransplantationOvarian NeoplasmsNeoplasm ProteinsDisease ProgressionChemotherapy, AdjuvantDisease-Free Survival