If it's more than 4 millimetres thick, then a biopsy or a dilation and curettage procedure is used to remove some endometrial cells and confirm the diagnosis.
如果子宫内膜厚度超过4毫米，就需要进行活检或宫颈扩张及刮宫术，来获取子宫内膜细胞以确诊。
Dilation and curettage
原声例句
Osmosis-生殖
英语百科
Dilation and curettage
Dilation (or dilatation) and curettage (D&C) refers to the dilation (widening/opening) of the cervix and surgical removal of part of the lining of the uterus and/or contents of the uterus by scraping and scooping (curettage). It is a therapeutic gynecological procedure as well as the most often used method of first trimester abortion.