Neoplasm MicrometastasisBone Marrow NeoplasmsSentinel Lymph Node BiopsyLymphatic MetastasisKeratinsLymph NodesKeratin-20Pancreatic NeoplasmsNeoplasm StagingFrozen SectionsImmunohistochemistryHematoxylinNeoplasmsNeoplasm MetastasisLung NeoplasmsNeoplasms, Cystic, Mucinous, and SerousMammaglobin BStomach NeoplasmsBreast NeoplasmsKeratin-19Neoplasm InvasivenessPrognosisReverse Transcriptase Polymerase Chain ReactionTumor Markers, BiologicalBile Duct NeoplasmsLiver NeoplasmsSkin NeoplasmsNeoplastic Cells, CirculatingNeoplasms, Multiple PrimaryAxilla