Neoplasm MicrometastasisBone Marrow NeoplasmsSentinel Lymph Node BiopsyLymphatic MetastasisKeratinsLymph NodesPrognosisKeratin-20Frozen SectionsRisk FactorsHematoxylinPredictive Value of TestsNeoplasm StagingMammaglobin BRisk AssessmentNeoplasm MetastasisBreast NeoplasmsKeratin-19ImmunohistochemistryRetrospective StudiesStomach NeoplasmsSensitivity and SpecificityLung NeoplasmsReverse Transcriptase Polymerase Chain ReactionNeoplasm InvasivenessNeoplastic Cells, CirculatingFollow-Up StudiesTumor Markers, BiologicalAxillaSurvival Analysis