Purpose To investigate the expression and significance of ARID1 A protein in uterine endometrioid adenocarcinoma.Methods Immunohistochemistry was used to detect the expression of ARID1 A protein in 392 cases including proliferative endometrium,secretive endometrium,pregnant endometrium,simple or complex hyperplasia,atypical endometrial hyperplasia and endometrioid carcinoma at different stages of progeression and to analyze the relationship between ARID1 A protein and its clinicalpthological significance in...