Thin and Thick of the Lining of your uterus.

Much discussion in the gyno office is about how thick or thin the lining layer of the uterus should be. Normal measurements have to be considered based on your age, where you are in a menstrual cycle if you still have periods, and what hormonal medication you are on. Other factors such as prior c-sections or surgeries will play a part in this as well. Mulling over the varied colored sage from the garden I am reminded that there are many shades to "normal" when it comes to lining thickness. Experts have published  the newest meta-analysis of studies that looked at normal and abnormal endometrial thickness measurements, and I see many patients who have been told conflicting advice about their lining tissue and they come in to see their gyno and are wondering what to do. Although clinical factors mentioned above were always a consideration, we gynos heavily have relied on the objective measurements and certain cut off points of endometrial thickness when evaluating patients with post-menopausal bleeding. And we used to tell patients that if their endometrial thickness was under 4 mm they were very unlikely to have lining cancer of the uterus, but now the newest information fro across the pond from a large number of research groups is that 4mm endometrial thickness measurement was too thick, and that 3 is a better cut off. Other gynos feel comfortable if your uterine lining in menopause is 5 mm or other. So if you have had an ultrasound in the past couple of years, reconsider the measurements, and see if it is time to get another ultrasound. And for the best advice on measurements, the measurements have to be taken extremely accurately as well! So a retest is reasonable. During the retest we look for fluid in the cavity, ovarian cysts and other conditions such as uterine fibroids. Back to the ultrasound waves ladies, we have to remeasure!


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