Management of chronic pancreatitis complicated with a bleeding pseudoaneurysm

(整期优先)网络出版时间:2014-12-22
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Chronicpancreatitisisanongoingdiseasecharacterizedbypersistentinflammationofpancreatictissues.Withdiseaseprogression,patientswithchronicpancreatitismaydeveloptroublesomecomplicationsinadditiontoexocrineandendocrinepancreaticfunctionalloss.Amongthem,apseudoaneurysm,mainlyinducedbydigestiveenzymeerosionofvesselsinproximitytothepancreas,isarareandlife-threateningcomplicationifbleedingofthepseudoaneurysmoccurs.Atpresent,noprospectiverandomizedtrialshaveinvestigatedthetherapeuticstrategyforthisrarebutcriticalsituation.Theroleofarterialembolization,thetimingofsurgicalinterventionandevensurgicalproceduresarestillcontroversial.Inthisreview,wesuggestthatdynamicabdominalcomputedtomographyandangiographyshouldbeperformedfirsttolocalizethebleedersandtoevaluatetheassociatedcomplicationssuchaspseudocystformation,followedbyarterialembolizationtostopthebleedingandtoachieveearlystabilizationofthepatient’scondition.Withadvancesandimprovementsinendoscopicdevicesandtechniques,therapeuticendoscopyforpancreaticpseudocystsistechnicallyfeasible,safeandeffective.Surgicalinterventionisrecommendedforableedingpseudoaneurysminpatientswithchronicpancreatitiswhoareinanunstablecondition,forthoseinwhomarterialembolizationofthebleedingpseudoaneurysmfails,andwhenendoscopicmanagementofthepseudocystisunsuccessful.Ifableedingpseudoaneurysmislocatedoverthetailofthepancreas,resectionisapreferentialprocedure,whereasifthelesionissituatedovertheheadorbodyofthepancreas,relativelyconservativesurgicalproceduresarerecommended.