If you have had a medication abortion or an abortion, and the ultrasound reveals that the blood flow signal is not rich, it means that the residue is not particularly active, so you should cooperate with the blood test for HCG. if the HCG is not particularly high and the residue is small, you can continue conservative treatment with medication. If the HCG is particularly high and the ultrasound shows that the blood flow signal is not rich, it is recommended to clear the uterus as soon as possible to prevent infection or bleeding. If the ultrasound shows abnormal echogenic clusters in the uterine cavity, the blood flow is not rich suggesting that it may be benign, or the blood supply of the redundant organism is not particularly rich, it may be benign uterine fibroids or endometrial polyps, and the possibility of cancer is relatively small, but it only plays an inferential role. However, it is only for inferential purpose, and the specific diagnosis should be confirmed by surgery and removal and pathological examination.