Organ Systems, Gynecological, Uterus Endometrial Stromal Sarconoma October 10, 2017 peferguson IHC Characteristics ER Positive PR Positive Beta-Catenin Strong nuclear positivity in 67% AE1/AE3 +/- (~50%+, usually due to CK19) References Mod Pathol 2008;21:756 Hum Pathol 2008;39:1459
