Colonic NeoplasmsDimethylhydrazinesIntestinal PolypsAdenomaColonColonic DiseasesIntestinal MucosaPancreatic NeoplasmsColonic PolypsNeoplasmsNeoplasms, Cystic, Mucinous, and SerousColitisNeoplasms, Multiple PrimarySkin NeoplasmsGastrointestinal TransitColonic Pseudo-ObstructionDiverticulosis, ColonicKidney NeoplasmsGastrointestinal MotilityNeoplasms, Second PrimaryAdenocarcinoma, MucinousImmunohistochemistry