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1、ColorectalCancerWhatisit?ItisthethirdmostfrequentlydiagnosedcancerinmenandwomenandthesecondhighestcauseofcancerdeathsintheU.S.Yet,whenfoundearly,itishighlycurable.Thistypeofcanceroccurswhenabnormalcellsgrowintheliningofthelargeintestine(colon)orrectum.Learnmoreaboutwhogetscolo
2、rectalcancer,howitisdetected,andwhatthelatesttreatmentscanaccomplish.Howitstarts?Itoftenbeginaspolyps–benigngrowthsonthesurfaceofthecolon.Thetwomostcommontypesofintestinalpolypsareadenomasandhyperplasicpolyps.Theydevelopwhenthereareerrorsinthewaycellsgrowandrepairtheliningofth
3、ecolon.Mostpolypsremainbenign,butsomehavethepotentialtoturncancerous.Removingthemearlypreventscolorectalcancer.RiskFactorsYouCan'tControlgenetics&lifestyle.Age–mostpatientsareolderthan50PolypsorinflammatoryboweldiseaseFamilyhistoryofcolorectalcancerHistoryofovarianorbreastcanc
4、erRiskFactorsYouCanControlDiethighinred,processed,orheavilycookedmeatsBeingoverweight(excessfataroundthewaist)ExercisingtoolittleSmokingordrinkingalcoholItswarningSignsThereareusuallynoearlywarningsignsforcolorectalcancer.Forthisreasonit'simportanttogetscreened.Detectingcancer
5、earlymeansit'smorecurable.Asthediseaseprogresses,patientsmaynoticebloodinthestool,abdominalpain,achangeinbowelhabits(suchasconstipationordiarrhea),unexplainedweightloss,orfatigue.Bythetimethesesymptomsappear,tumorstendtobelargerandmoredifficulttotreat.ScreeningBecausecolorecta
6、lcancerisstealthy,screeningsarethekeytoearlydetection.Beginningatage50,mostpeopleshouldhaveacolonoscopyevery10years.Thisprocedureusesatinycameratoexaminetheentirecolonandrectum.Thesetestsnotonlyfindtumorsearly,butcanactuallypreventcolorectalcancerbyremovingpolyps(shownhere).Vi
7、rtualColonoscopyThereisnowanalternativetocolonoscopythatusesCTscanimagestoconstructa3-Dmodelofyourcolon.Calledvirtualcolonoscopy,theprocedurecanrevealpolypsorotherabnormalitieswithoutactuallyinsertingacamerainsideyourbody.Themaindisadvantageisthatifpolypsarefound,arealcolonosc
8、opywillstillbeneededtoremoveandevaluatethem.X-RaysoftheColon(
