Colonic PolypsPolypsIntestinal PolypsColonography, Computed TomographicAdenomatous PolypsColonoscopyColonic NeoplasmsAdenomatous Polyposis ColiColonDiverticulosis, ColonicAdenomaNasal PolypsRectal DiseasesSigmoid DiseasesGenes, APCSolitary NucleusRadiographic Image Interpretation, Computer-AssistedIntestinal MucosaColonic DiseasesColorectal NeoplasmsSolitary Pulmonary NoduleSolitary Fibrous Tumor, PleuralRetrospective StudiesSensitivity and SpecificityNeoplasms, Fibrous Tissue