Neoplasm MicrometastasisLymph NodesBone Marrow NeoplasmsSentinel Lymph Node BiopsyLymphatic MetastasisKeratinsPrognosisNeoplasm StagingKeratin-20Lymph Node ExcisionImmunohistochemistryFrozen SectionsBreast NeoplasmsNeoplasm MetastasisHematoxylinStomach NeoplasmsTumor Markers, BiologicalKeratin-19Reverse Transcriptase Polymerase Chain ReactionNeoplasm InvasivenessLung NeoplasmsMammaglobin BAxillaRetrospective StudiesSensitivity and SpecificityNeoplastic Cells, CirculatingSurvival AnalysisAdenocarcinomaPancreatic NeoplasmsCarcinomaLiver NeoplasmsCarcinoembryonic AntigenBile Duct NeoplasmsNeoplasmsSurvival RatePredictive Value of TestsColorectal Neoplasms