Choroid plexus cyst

Introduction A choroid plexus cyst is a small cyst with a diameter of 3 mm scattered in the lateral ventricle choroid found in the fetal development at 14 to 24 weeks of gestational age. More than 90% of fetal choroid plexus cysts disappeared after 26 weeks of gestation, and only a few showed progressive enlargement.

Cause

1, the normal fetus can be transient, simple choroidal cysts will disappear in the late pregnancy, most of them do not merge with other parts of the abnormalities.

2, 18-trisomy, 21-trisomy and other chromosome abnormalities.

an examination

Related inspection

Systematic fetal ultrasound examination of amniotic fluid cell culture chromosome examination

1, ultrasound diagnosis.

2, puncture amniotic fluid cell culture.

3, umbilical cord puncture to take cord blood culture.

Differential diagnosis

1. The pulsatile plexus is echoed in the dark echo zone, and the thin edge of the capsule wall is smooth, neat and mostly round. Cysts can be single or multiple.

2, dynamic observation of the size of the cyst, if the cyst is less than 1CM or smaller, the possibility of chromosomal abnormalities is small, at the same time should pay attention to check whether other parts of the new deformity, sometimes after the detection of choroid plexus cyst, other malformations can not be detected . However, some scholars believe that the size, number, bilateral or unilateral choroid plexus cysts, whether to progressively reduce or disappear, the risk of fetal chromosomal abnormalities will not change, the detection of choroid plexus cysts should be combined with other clinical data to further amnion Cavity puncture amniococytes or umbilical cord puncture blood culture to exclude chromosomal abnormalities such as 18-trisomy and 21-trisomy.

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