The lower edge of the placenta covering the endocervical os at 12 weeks is associated with endometrial lesions, placental abnormalities and other factors.
1. endometrial injury lesions: 12 weeks placenta lower edge over the cervical opening usually suggests that the placenta is hypoplastic, may be due to a history of uterine surgery, multiple abortions, scraping history, etc., thus causing endometritis or atrophic lesions, fertilized egg implanted in the damaged uterine lining, will be due to the lack of blood supply to the placenta, in order to take in enough nutrients, the placenta area, which will produce the lower edge of the placenta over the cervical opening. Symptoms.
2. Abnormalities of the placenta: If a woman has abnormalities in the shape and size of the placenta, she may also have symptoms of the lower edge of the placenta covering the opening of the cervix at 12 weeks.
It is recommended that women should rest more, avoid exertion, and go to the hospital for regular checkups to clarify their own health and the development of the fetus and the position of the placenta.