How long does it take for a choroid plexus cyst to absorb after a baby is born?

Patient's question:

No

Doctor's answer:

90% of fetal choroid plexus cysts disappear after the 26th week of pregnancy, with only a few showing progressive enlargement. When choroid plexus cysts are detected, further amniocentesis with amniotic fluid cell culture or cordocentesis with umbilical cord blood culture should be performed in combination with other clinical data to rule out chromosomal abnormalities such as trisomy 18 and trisomy 21.