Invasive Breast Cancer (IDC/ILC) - American Cancer Society

This is the most common type of breast cancer. About 8 in 10 invasive breast cancers are invasive (or infiltrating) ductal carcinomas (IDC). IDC ... Search prod Verenespañol | Downloadthistopic[PDF] TypesofBreastCancer DuctalCarcinomainSitu(DCIS) InvasiveBreastCancer(IDC/ILC) Triple-negativeBreastCancer InflammatoryBreastCancer AngiosarcomaoftheBreast PagetDiseaseoftheBreast Home CancerA-Z BreastCancer AboutBreastCancer TypesofBreastCancer InvasiveBreastCancer(IDC/ILC) Breastcancersthathavespreadintosurroundingbreasttissueareknownasinvasivebreastcancers. Mostbreastcancersareinvasive,buttherearedifferenttypesofinvasivebreastcancer.Thetwomostcommonareinvasiveductalcarcinomaandinvasivelobularcarcinoma. Inflammatorybreastcancerisalsoatypeofinvasivebreastcancer.  Invasive(infiltrating)ductalcarcinoma(IDC) Thisisthemostcommontypeofbreastcancer.About8in10invasivebreastcancersareinvasive(orinfiltrating)ductalcarcinomas(IDC). IDCstartsinthecellsthatlineamilkductinthebreast.Fromthere,thecancerbreaksthroughthewalloftheduct,andgrowsintothenearbybreasttissues.Atthispoint,itmaybeabletospread(metastasize)tootherpartsofthebodythroughthelymphsystemandbloodstream. Invasivelobularcarcinoma(ILC) About1in10 invasivebreastcancers isaninvasivelobularcarcinoma(ILC). ILCstartsinthebreastglandsthatmakemilk(lobules).LikeIDC,itcanspread(metastasize)tootherpartsofthebody.Invasivelobularcarcinomamaybehardertodetectonphysicalexamandimaging,likemammograms,thaninvasiveductalcarcinoma.Andcomparedtootherkindsofinvasivecarcinoma,itismorelikelytoaffectbothbreasts.About1in5womenwithILCmighthavecancerinbothbreastsatthetimetheyarediagnosed. Lesscommon typesofinvasivebreastcancer Therearesomespecialtypesofbreastcancerthataresub-typesofinvasivecarcinoma.Theyarelesscommonthanthebreastcancersnamedaboveandeachtypicallymakeupfewerthan5%ofallbreastcancers. Theseareoftennamedafterfeaturesofthecancercells,likethewaysthecellsarearranged. SomeofthesemayhaveabetterprognosisthanthemorecommonIDC.Theseinclude: Adenoidcystic(oradenocystic)carcinoma Low-gradeadenosquamouscarcinoma(thisisatypeofmetaplasticcarcinoma) Medullarycarcinoma Mucinous(orcolloid)carcinoma Papillarycarcinoma Tubularcarcinoma Somesub-typeshavethesameormaybeworseprognosesthanIDC.Theseinclude: Metaplasticcarcinoma(mosttypes,includingspindlecellandsquamous,exceptlowgradeadenosquamouscarcinoma) Micropapillarycarcinoma Mixedcarcinoma(hasfeaturesofbothinvasiveductalandinvasivelobular) Ingeneral,allofthesesub-typesarestilltreatedlikeIDC. Treatinginvasivebreastcancer Treatmentofinvasivebreastcancerdependsonhowadvancedthecanceris(thestageofthecancer)andotherfactors.Mostwomenwillhavesometypeofsurgerytoremovethetumor.Dependingonthetypeofbreastcancerandhowadvanceditis,youmightneedothertypesoftreatmentaswell,eitherbeforeoraftersurgery,orsometimesboth. SeeTreatingBreastCancerfordetailsondifferenttypesoftreatment,aswellascommontreatmentapproachesbasedonthestageorotherfactors. Writtenby References TheAmericanCancerSocietymedicalandeditorialcontentteam Ourteamismadeupofdoctorsand oncologycertifiednurseswithdeepknowledgeofcancercareaswellasjournalists,editors,andtranslatorswithextensiveexperienceinmedicalwriting. ArpinoG,Infiltratinglobularcarcinomaofthebreast:tumorboardcharacteristicsandclinicaloutcome.BreastCancerResearch.2004;6:149. DillonDA,GuidiAJ,SchnittSJ.Ch.25:Pathologyofinvasivebreastcancer.In:HarrisJR,LippmanME,MorrowM,OsborneCK,eds.DiseasesoftheBreast.5thed.Philadelphia,Pa:Lippincott-Williams&Wilkins;2014. HenryNL,ShahPD,HaiderI,FreerPE,JagsiR,SabelMS.Chapter88:CanceroftheBreast.In:NiederhuberJE,ArmitageJO,DoroshowJH,KastanMB,TepperJE,eds.Abeloff’sClinicalOncology.6thed.Philadelphia,Pa:Elsevier;2020. HuoberJ,GelberS,GoldhirschA,etal.Prognosisofmedullarybreastcancer:analysisof13InternationalBreastCancerStudyGroup(IBCSG)trials.AnnOncol.2012;23(11):2843–2851. JagsiR,KingTA,LehmanC,MorrowM,HarrisJR,BursteinHJ.Chapter79:MalignantTumorsoftheBreast.In:DeVitaVT,LawrenceTS,LawrenceTS,RosenbergSA,eds.DeVita,Hellman,andRosenberg’sCancer:PrinciplesandPracticeofOncology.11thed.Philadelphia,Pa:LippincottWilliams&Wilkins;2019. References ArpinoG,Infiltratinglobularcarcinomaofthebreast:tumorboardcharacteristicsandclinicaloutcome.BreastCancerResearch.2004;6:149. DillonDA,GuidiAJ,SchnittSJ.Ch.25:Pathologyofinvasivebreastcancer.In:HarrisJR,LippmanME,MorrowM,OsborneCK,eds.DiseasesoftheBreast.5thed.Philadelphia,Pa:Lippincott-Williams&Wilkins;2014. HenryNL,ShahPD,HaiderI,FreerPE,JagsiR,SabelMS.Chapter88:CanceroftheBreast.In:NiederhuberJE,ArmitageJO,DoroshowJH,KastanMB,TepperJE,eds.Abeloff’sClinicalOncology.6thed.Philadelphia,Pa:Elsevier;2020. HuoberJ,GelberS,GoldhirschA,etal.Prognosisofmedullarybreastcancer:analysisof13InternationalBreastCancerStudyGroup(IBCSG)trials.AnnOncol.2012;23(11):2843–2851. JagsiR,KingTA,LehmanC,MorrowM,HarrisJR,BursteinHJ.Chapter79:MalignantTumorsoftheBreast.In:DeVitaVT,LawrenceTS,LawrenceTS,RosenbergSA,eds.DeVita,Hellman,andRosenberg’sCancer:PrinciplesandPracticeofOncology.11thed.Philadelphia,Pa:LippincottWilliams&Wilkins;2019. LastRevised:November19,2021 AmericanCancerSocietymedicalinformationiscopyrighted material.Forreprintrequests,pleaseseeourContentUsagePolicy. TypesofBreastCancer DuctalCarcinomainSitu(DCIS) InvasiveBreastCancer(IDC/ILC) Triple-negativeBreastCancer InflammatoryBreastCancer AngiosarcomaoftheBreast PagetDiseaseoftheBreast MoreInBreastCancer AboutBreastCancer RiskandPrevention EarlyDetectionandDiagnosis UnderstandingaBreastCancerDiagnosis Treatment BreastReconstructionSurgery LivingasaBreastCancerSurvivor BackToTop Close * Close Imageof Previous Next Close Close SelectAHopeLodge