Adenomatous PolypsColonic PolypsPolypsAdenomatous Polyposis ColiIntestinal PolypsAdenomaColonoscopyAdenomatous Polyposis Coli ProteinColorectal NeoplasmsColonic NeoplasmsNasal PolypsSigmoidoscopyColonography, Computed TomographicRectal NeoplasmsHyperplasiaColonIntestinal MucosaRectumAdenocarcinomaPrecancerous ConditionsCecal NeoplasmsTumor Markers, BiologicalBarium SulfateGardner SyndromeGenes, APCCystadenomaEnemaSulindacRectal DiseasesSigmoid NeoplasmsImmunohistochemistryCell Line, TumorOccult Bloodbeta CateninGerm-Line MutationMutationDiverticulum, ColonTumor BurdenCase-Control StudiesColon, TransverseEndoscopyRetrospective StudiesAnti-Inflammatory Agents, Non-SteroidalBiopsyTumor Necrosis Factor-alphaCarcinomaDuodenal NeoplasmsIntestinal NeoplasmsRisk FactorsFibromatosis, AggressiveNeoplasms, ExperimentalNeoplasmsCell DivisionDisease ProgressionGenes, Tumor SuppressorTumor Suppressor Protein p53Cytoskeletal ProteinsWilms TumorMass ScreeningBrain NeoplasmsNeoplasm MetastasisCarcinoid TumorNeoplasm ProteinsTumor Suppressor ProteinsCell Transformation, NeoplasticLiver NeoplasmsVegetablesPrognosisNeoplasms, Multiple PrimaryAdenomatosis, PulmonaryNeovascularization, PathologicDNA, NeoplasmNeuroendocrine TumorsProctocolectomy, Restorative