Intestinal PolyposisAdenomatous Polyposis ColiColorectal NeoplasmsAdenomatous Polyposis Coli ProteinGenes, APCIntestinal PolypsAdenomaPolypsColonic PolypsColonoscopyColonic Neoplasmsbeta CateninColorectal Neoplasms, Hereditary NonpolyposisRectumColorectal SurgeryColectomyRectal NeoplasmsGardner SyndromeGerm-Line MutationColonAdenocarcinomaAdenomatous PolypsDuodenal NeoplasmsPeutz-Jeghers SyndromeCytoskeletal ProteinsFibromatosis, AggressiveIntestinal NeoplasmsMutationIntestinal MucosaProctocolectomy, RestorativeOsteomaSigmoidoscopySulindacNeoplastic Syndromes, HereditaryFibromatosis, AbdominalDNA Mutational AnalysisCarcinomaAxin ProteinFluorouracilTumor Markers, BiologicalSinusitisLiver NeoplasmsMicrosatellite RepeatsNeoplasm StagingImmunohistochemistry