Carcinoma, Signet Ring CellCarcinoma, LobularAdenocarcinoma, MucinousStomach NeoplasmsAppendiceal NeoplasmsUmbilicusCarcinoma in SituCarcinoma, Ductal, BreastCarcinomaBreast NeoplasmsImmunohistochemistryCadherinsMicrosatellite InstabilityGastrectomyNeoplasm InvasivenessRare DiseasesAdenocarcinomaCarcinoma, Intraductal, NoninfiltratingMucinsNeoplasm StagingProto-Oncogene Proteins B-rafPeritoneal NeoplasmsPrognosisPyloric AntrumEndoscopy, GastrointestinalColorectal NeoplasmsCarcinoma, Squamous Cellras ProteinsLoss of HeterozygosityCarcinoma, HepatocellularHistocytochemistryAlcian BlueFibrocystic Breast DiseaseBreastMicrosatellite RepeatsSurvival Analysis