An 8mm depression of the endometrium at the base of the uterus is indicative of a malformed uterus, meaning that the woman’s uterus is a saddle-shaped uterus, or a bowed uterus. A bowed uterus is a type of malformed uterus, in which the bilateral paramedian tubes do not completely fuse during embryonic development, resulting in a slightly depressed uterine fundus but a normal cervix and uterine body. The effect of a bowed uterus on a woman is closely related to the degree of bowing. A mild bowed uterus has little or no effect; a slightly more severe bowed uterus has an increased rate of miscarriage or preterm labor later in pregnancy, as well as an adverse pregnancy outcome of fetal growth restriction. If the bowed uterus is often not clinically evident during non-pregnancy and is only detected on examination, bowed uterus can be diagnosed by ultrasonography, hysterosalpingography, and magnetic resonance imaging (MRI). Severe cases of bowed uterus should be treated with surgery, such as hysteroplasty, before pregnancy to avoid the associated adverse pregnancy outcomes. For any other questions, it is recommended to consult a medical professional for guidance.