The size of a normal endometrium varies significantly depending on the phase of the menstrual cycle.
Here's a breakdown:
-
During Menstruation: The endometrium appears as a thin, echogenic line, typically measuring 1-4 mm in thickness.
-
Proliferative Phase (Day 5-14): During this phase, the endometrium thickens, developing a trilaminar appearance. At ovulation, it measures approximately 12-13 mm, with a range of 10-16 mm.
| Phase | Endometrium Thickness |
|---|---|
| Menstruation | 1-4 mm |
| Proliferative Phase | 10-16 mm (12-13 mm at ovulation) |
