A . proliferativephaseofendometrium：发生在月经后半期甚至月经期
B . simplehyperplasiaofendometrium：腺体增生伴有轻至中度结构异常
C . complexhyperplasiaofendometrium：腺上皮呈复层或假复层排列，有核分裂
D . atrophicendometrium：腺上皮为单层立方或低柱状细胞
E . atypicalhyperplasiaofendometrium见于功血的复杂型增生过长