Carcinoma, Signet Ring CellAdenocarcinoma, MucinousStomach NeoplasmsAppendiceal NeoplasmsUmbilicusCarcinomaMicrosatellite InstabilityLung NeoplasmsImmunohistochemistryAdenocarcinomaGastrectomyRare DiseasesCarcinoma, Lewis LungMucinsLungCarcinoma, Non-Small-Cell LungProto-Oncogene Proteins B-rafCadherinsPeritoneal NeoplasmsCarcinoma, Squamous CellNeoplasm StagingPyloric AntrumEndoscopy, GastrointestinalColorectal NeoplasmsLoss of Heterozygosityras ProteinsPrognosisCarcinoma, Small CellHistocytochemistryNeoplasm InvasivenessCarcinoma, HepatocellularAlcian BlueMicrosatellite RepeatsSurvival Analysis