What is the normal mesurement of the edometrium for post menopausal women?

Question

I'm a student who needs help. A 70 y/o female patient came in complaning of LLQ pain. A TV ultrasound was performed to better evaluate the edometrium and the adnexa. The uterus is found to be the normal size of 6.5x3.5 cm. While, the endometrium was seen heterogeneous, abnormal in echogenicty and was thickened to 7mm. There are some hyper attenuated focus found centrally and some free fluid within the endometrium, and in the cul-de-sack. The andexa seemed to be grossly normal. She is not on hormone replacment therapy. This exam is a follow-up from previous, and since then, the focus found within the endometrium have enlarged.

Answer 1

I am apparently post-menopausal, have to be ultrasounded at least once a year for reasons I won't go into now, they tell me I should be concerned if the endometrium is thicker than 5 mm. Apparently there is no lower limit, have had as little as 1 mm and no one raised any red flags.