An endometrial lining of 1.1 centimeters after a medical abortion with no residuals is usually normal. Although most women’s endometrium will be significantly thinner after medical abortion, a few women’s endometrium is also thicker after medical abortion. It is generally normal for a patient to have an endometrial thickness of 1.1 centimeters after a medical abortion, with the test results showing no residuals and the patient having no obvious symptoms. If over time, the endometrium changes accordingly with the menstrual cycle, it means that the patient has returned to normal. If the patient’s uterine lining has been relatively thick after the medical abortion and does not change in thickness cyclically with the menstrual cycle, it generally indicates that the patient’s body sex hormone secretion is abnormal, and the patient should consult a doctor in time.