Fetal abdominal fluid accumulation of 9mm is an abnormal condition.
Under normal circumstances, there should not be any fluid accumulation in the abdominal cavity of the fetus, so there is no such thing as a normal amount of fluid in the abdominal cavity of the fetus. If the ultrasound examination reveals that there is still fluid in the fetal abdomen, you should cooperate with your doctor to find out the cause.
Fetal peritoneal effusion is an abnormal manifestation of prenatal ultrasound examination, often accompanied by other body cavity fluid and skin edema, etc. The causes of fetal peritoneal effusion are more diverse, and may be related to chromosomal abnormality, maternal and child blood type incompatibility, intrauterine infection and other factors, so further examination is needed to rule out the above causes.
It is recommended that pregnant women should do all the medical checkups during pregnancy to keep abreast of the development of the fetus and avoid adverse pregnancy outcomes.