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1、TECHNICALREVIEWRoleofself-expandablestentsforpatientswithcoloncancer(withvideos)112ToddH.Baron,MD,FASGE,LouisM.WongKeeSong,MD,AlessandroRepici,MDMinneapolis,Minnesota,USA;Milan,ItalyMorethan20yearshavepassedsincethefirstdescrip-eredSEMShavesimilarpatencyrates,althoughthedataontio
2、nofendoscopicplacementofaprosthesisforthepal-thistopicareconflicting.7,8liationofrectalcancerbyDohmotoetal,1althoughitstillremainsapopularmisconceptionthatthisreportrepre-sentedthefirstself-expandablemetalstent(SEMS)place-TECHNIQUESOFINSERTIONment.Inactuality,itwasarigidCelestintu
3、be.ThefirstendoscopicallyplacedSEMScanbetracedtoSpinellietDetailedreviewsonoptimizingstentplacementand9,10al,2who,in1992,treated4patientsforpalliationofma-minimizingstent-relatedadverseeventsareavailable.lignantrectalobstruction.2Sincethen,aplethoraofarticlesEndoscopiccolonicsten
4、tplacementcanbechallengingontheuseofSEMSintheGItracthassurfaced.APubMedbecauseofthecomplexcolonicanatomy;manytumorssearchusingtheterm“colonicstent”revealedmorethanarelocatedatcolonicangulationsorflexuresandcannot800articlesrelatedtoplacementofcolonicSEMSforthebeseenenface.Another
5、difficultyinvolvestherelativemanagementofmalignantcolonicobstruction.Althoughunfamiliarityofthefluoroscopicnuancesofthecolonmostreportsareofheterogeneouspatientpopulations,thecomparedwithotherareaswithintheGItract.Patientsmajorityofpatientsintheseserieshavehadprimaryorwithacutecol
6、onicobstructionareacutelyillandoftenrecurrentcolorectalcancer,whichcontinuestorecurdespitecannotbeadequatelyprepped.Thepotentialforperfora-improvementsincolorectalcancerscreening.ThisreviewtionandperitonealsoilingposesadditionalchallengestofocusesontheroleofSEMSinpatientswithcol
7、oncancer.successfulandsafestentinsertion.Thus,thetechnicalReportsonoutcomedataarerestrictedtothepast5years.successrateisnotashighasthatforesophagealstentplacement.However,therangeoftechnicaldifficultiesbetweenpatientsalsovarieswidely.Forexample,SEMSTECHNOLOGYplacementinanambulato
8、rypatientwhopresentswithsubtotalrectalobstructi
