What does it indicate if the cisterna magna continues to enlarge in a fetus?

Hello,

Welcome to icliniq.com.

I understand your concern.

I have reviewed your reports (attachment removed to protect the patient's identity).

Hypoplastic nasal bone increases the risk of chromosomal anomaly. The presence or absence of chromosomal anomalies can be confirmed by amniocentesis. The NIPT report is good and reassuring, but amniocentesis is the preferred method for confirmation. I suggest you consult a fetal medicine specialist. As you are already 23 plus weeks, it is important to consult at the earliest. Also, I suggest you repeat the scan.

Regarding the growth of the cisterna magna, if it continues to enlarge, it means there is an obstruction near the ventricles. Therefore, I suggest you go for fetal MRI (magnetic resonance imaging). It is a safe and noninvasive method that detects any obstructions near the ventricles of the brain. Otherwise, you can get a repeat ultrasound done by a fetal medicine specialist experienced in fetal neuroimaging. In most cases, hypoplastic nasal bone and 7.3 mm cisterna magna are normal findings.

I hope this helps.

Thank you.