Are anechoic zones good or bad?

In our lives, many people will check the function of the uterus when preparing for pregnancy, because the uterus is the main place for the fetus. If there is a disease in this part, it is likely to lead to infertility. Some people may have an anechoic area when checking the uterus. When there is an anechoic area, the anterior and posterior walls of the patient's uterus are closed. So is the anechoic area good or bad?

Explanation of "anechoic zone" in reference books

1. In ultrasound examination, an area within a lesion or tissue that does not produce an echo. Found in fluid cavities such as the gallbladder, bladder, and cysts. The presence of anechoic areas within a solid tumor indicates liquefactive necrosis within the tumor.

Explanation of "anechoic zone" in academic literature

1. Clinically known as the "anechoic zone". A "low-interface zone" appears in the turbid fluid. In this zone, floating small echo reflections can be seen, or they are spread all over the area, or sink to the bottom and move with the body position. Clinically known as the "hypoechoic zone"

Under normal circumstances, the anterior and posterior walls of the uterus are closed and attached to each other, and there will be no echo-free areas. But I don’t know why you are going to check. If your menstruation is about to come, during your menstrual period, or after a miscarriage, postpartum, etc., and there is blood accumulation, it is also within the normal range to have echo-free areas. In addition, if it is the early stage of pregnancy, when the uterus has just closed and is close together, there will be no echo-free area. But I don’t know why you are going to check. If your period is about to come, during your period, or after a miscarriage or childbirth, and there is blood accumulation, there will be echo-free areas, which is also within the normal range. In addition, if it is the early stage of pregnancy, when a small gestational sac can just be seen, because there are no markers such as yolk sac or embryo, B-ultrasound will often describe no echo-free area. This is actually a small gestational sac and is also normal.