Neoplasm MicrometastasisLymph NodesLymphatic MetastasisKeratinsSentinel Lymph Node BiopsyImmunohistochemistryPrognosisBone Marrow NeoplasmsLymph Node ExcisionNeoplasm StagingAxillaBreast NeoplasmsLymphKeratin-20Frozen SectionsStomach NeoplasmsNeoplasm InvasivenessNeoplasm MetastasisHematoxylinKeratin-19Mammaglobin BTumor Markers, BiologicalLung NeoplasmsAdenocarcinomaSensitivity and SpecificityReverse Transcriptase Polymerase Chain ReactionSurvival AnalysisCarcinomaRetrospective StudiesSurvival RateNeoplasm Recurrence, LocalNeoplastic Cells, CirculatingBile Duct NeoplasmsMediastinumDisease-Free SurvivalPredictive Value of TestsColorectal NeoplasmsMelanomaFollow-Up StudiesChemotherapy, AdjuvantCarcinoembryonic AntigenTreatment OutcomeSinoatrial NodeLymphatic DiseasesLiver NeoplasmsBone MarrowMice, NudeRNA, MessengerSkin NeoplasmsTime FactorsImmunoenzyme Techniques