The anterior and posterior diameters of the uterus are 5-6 cm. If the anterior and posterior diameters of the uterus are clinically found to be particularly enlarged, that is, the uterus is full, it is often caused by the following reasons: 1. Because of chronic inflammation of the uterus itself, the uterine muscle proliferates, so there is a particularly full form of the uterus, the anterior and posterior diameters of the uterus increase, there is repeated lower abdominal pain, vaginal discharge increases, and lower abdominal pain 2. caused by adenomyosis, which is a kind of endogenous endometriosis, the endometrium will be ectopic in the myometrium, and the ectopic endometrium lesion will bleed during menstruation, which will increase the size of the uterus and the anterior and posterior diameters of the uterus, so it often manifests as severe dysmenorrhea or infertility.