Endometrium 0.9cm is not a disease, endometrial thickness is a state of the endometrium, not a disease.
The thickness of the endometrium varies at different stages of the menstrual cycle. At the beginning of menstruation, with the onset of uterus and the shedding of endometrium, the endometrium is in a state of the thinnest, and it gradually thickens at the ovulation period, and then the thickness of the endometrium lasts through the luteal phase until the next menstrual period. As you can see, the thickness of the endometrial lining varies at each stage of the menstrual cycle and does not have a fixed value.
The thickness of the uterine lining should be determined by combining the actual factors, and patients are advised to consult a doctor in time if they have any uncomfortable symptoms.