结直肠疾病英文课件.ppt

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ColorectalCancer

ColonCaincidence:105,500/US/yrColonCamortality:48,100/US/yrimplies~45%colonCacasemortalityRectalCaincidence:42,000/US/yrRectalCamortality:8,500/Us/yrimplies~21%rectalCacasemortalityEpidemiology

3CharacteristicsinchinaYoungLowerlocationulceration

EthiologyDietaryhabitsPrecancousdiseasesEnvironmentfactorsHeredityfactorsOtherfactors

Dietaryhabit

HeredityfactorsAdenomatouspolyposissyndromes(APS)Hereditary“Non-polyposis”ColonCancer(HNPCC,Lynchsyndrome)FamilialAdenomatousPolyposis(FAP)

Otherfactors

Anatomy

ArterialsupplyofthecolonIleocolicarteryRightcolicarteryMeddlecolicarteryLeftcolicarterySigmoidarteries

VenousdrainageofthecolonSuperiormesentericveinInferiormesentericveinSplenicveinHepaticportalvein

LymphaticdrainageofthecolonEpicolicnodesParacolicnodesIntermediatenodesCentralnodes

Ileocecalregion

ArterialsupplyoftherectumSuperiorrectalarteryMiddlerectalarteryInferiorrectalartery

VenousdrainageoftherectumInternalhemorrhoidalplexusExternalhemorrhoidalplexus

Rectalregion

Modelofcolorectalcarcinogenesis(90%)NomalepitheliumHeperproliferativeepitheliumAdenomaCarcinoma病理生理Pathology

MorphologyProtrudetype

InfiltratetypeUlcerationtype

PathologyCytologyCarcinomeMucinouscarcinoma

carcinoideUndifferentiatedcarcinomaSquamouscarcinoma

Routeofmetastasis

RouteofmetastasisInfiltrationdirectlymphaticmetastasisHematogenousdisseminationImplantationmetastasis

LiverMetastasis

Implantationmetastasis

ClassificationofPathologyDukesstagesDukesA、B、C、DTNMstagesⅠ、Ⅱ、Ⅲ、Ⅳ

DUKESClassification

DukesStagesStageA:limitedtomucosaandsubmucosa90%StageB:extendsintomuscularisorserosa 60-75%StageC:onepositivenode-69%sixormorepositivenodes,27%StageD:mets.toliver,bone,lung5%

COLORECTALCANCE

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