Choroid Plexus Cyst
Ashish Jain, Bijaylaxmi Behera
Case Scenario
A 29-year-old, gravida 2, para 1 underwent antenatal ultrasonography (USG) at 18 weeks of gestation. On evaluation, the fetus was incidentally detected to have a right-sided choroid plexus cyst (CPC) of 5 mm × 5 mm; no other abnormalities were detected. The radiologist referred her to an obstetrician for antenatal counseling.
Conclusion
CPCs are developmental variations that are asymptomatic and usually regarded as benign variants. The size and number of CPCs are not of clinical relevance. They are known to be associated with aneuploidies. The need to additionally investigate these cysts by invasive methods such as amniocentesis or cordocentesis for karyotyping arises only in the presence of other important radiologic soft markers such as increased nuchal translucency, EIF, nasal hypoplasia, echogenic bowel, renal anomalies, or other risk factors such as advanced maternal age and a positive triple test. Follow-up USG is not indicated in isolated CPCs.
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