Neoplasm MicrometastasisBone Marrow NeoplasmsLungSentinel Lymph Node BiopsyLymphatic MetastasisKeratinsLung NeoplasmsLymph NodesKeratin-20Frozen SectionsLung DiseasesNeoplasm StagingHematoxylinNeoplasm MetastasisImmunohistochemistryMammaglobin BKeratin-19PrognosisBreast NeoplasmsStomach NeoplasmsReverse Transcriptase Polymerase Chain ReactionNeoplasm InvasivenessNeoplastic Cells, CirculatingLung InjuryAxillaTumor Markers, BiologicalAdenocarcinoma