What does trilaminar endometrium mean?

Answer 1

"Trilaminar emdometrium" is a term generally applied to the (ultra)sonographic pattern of the endometrium. It speaks to the "shape" of the interuterine area and, by default the echoic properties of the endometrium, which is the lining of the uterus. Let's back up.

The uterine lining, the endometrium, undergoes changes throughout a woman's menstrual cycle. In cases where a woman is undergoing some sort of fertility treatment, sonography reveals something about the characteristics of the endometrium, and investigators may suspect that conditions may or may not be favorable to fertilization and conception based on what they see in the sonogram. A trilaminar endometrium is more favorable than non-trilaminar.

What seems the case is that if the "general shape" of the image is a trilaminar endometrium, then the conditions for favorable outcomes in insemination attempts are improved over non-trilaminar sonography. There is not guarantee, but in the clearly non-trilaminar imaging, no pregnancies occurred in the studies.

Answer 2

Three layered endometrium during pregnancy. Over the course of the menstrual cycle, the uterine lining, or endometrium, thickens (in preparation for pregnancy) and thins (your period). When the endometrium is viewed on ultrasound, a trilaminar shape usually means you are in the later half of your cycle - around or after ovulation - and your lining is thickened as it should be. Early in your cycle, after your period and before ovulation, the lining is thin. The lining thickens as it prepares for ovulation and possible pregnancy.