Chorionic tissue can result in marked endometrial changes, known as an Arias-Stella reaction, that have an appearance similar to cancer. Historically, this change was diagnosed as endometrial cancer and it is important only in so far as it should not be misdiagnosed as cancer.
cHoriOnIc TisSuE Can REsulT in maRkED enDOMetrial chanGes, KNown As an arIaS-stella rEaCtiOn, tHat hAve an appEarAnCE SimilAR to caNcer. HistorIcALLy, thiS chAnge WAs diagNOSeD aS endOmeTrIal CaNcer and It is impoRtant oNly In So FAr aS it ShOUld noT be miSdIaGnOseD as CaNcEr.