Endometrial Stripe Size: Normal Measurement

The normal size of the endometrial stripe, which is the lining of the uterus as seen on a transvaginal ultrasound, can vary depending on a woman's age and stage of her menstrual cycle. Here are some general guidelines for the normal endometrial stripe measurements:

1. Pre-Menopausal Women: In pre-menopausal women of reproductive age, the endometrial stripe typically varies throughout the menstrual cycle. It's usually thinnest (around 2-4 millimeters) in the early proliferative phase (right after menstruation) and thickens as the cycle progresses. During the mid-to-late proliferative phase and the secretory phase, it may measure anywhere from 7-16 millimeters. These changes are part of the normal menstrual cycle.

2. Post-Menopausal Women: In post-menopausal women (those who have not had a menstrual period for at least one year), the endometrial stripe should generally be thin, typically less than 5 millimeters. If it measures thicker than this, it might be a cause for further evaluation, as it could indicate an abnormality such as endometrial hyperplasia or, in some cases, cancer.

It's important to note that individual variations can occur, and other factors, such as hormone therapy or medical conditions, can influence endometrial thickness. If there are concerns about the endometrial thickness or other uterine issues, a healthcare provider may recommend further tests or imaging, such as a hysterosonogram or biopsy, to assess the endometrium more accurately.

Keep in mind that the interpretation of endometrial thickness should always be done by a qualified healthcare professional in the context of a patient's specific medical history and symptoms. If you have any concerns about your endometrial stripe size, it's best to consult with your healthcare provider for a proper evaluation and guidance.