Jun 01, · Axial Flair shows nodular masses in bilateral atria of lateral ventricles, non enhancing on post contrast T1 with typical restricted diffusion on Dw images suggestive of Choroid Plexus Cysts. Syn: Choroid plexus xanthogranuloma. As mentioned, choroid plexus cysts are present in 1 to 2 percent of normal fetuses. However, in a very small percentage of fetuses with choroid plexus cysts, there is an associated chromosome disorder called trisomy Fetuses with trisomy 18 have an extra copy of chromosome Frequently, fetuses with trisomy 18 are stillborn.
We assessed the role of diffusion-weighted imaging (DWI) in the detection of choroid plexus cysts. We reviewed more than patients who had undergone MRI in a 1-year period. We reviewed echo-planar DWI with b= s/mm(2), acquired at tesla, for any difference in signal intensity which might . Choroid plexus cysts. Prevalence: 1 in 50 fetuses at 20 weeks’ gestation. More than 90% resolve by 26 weeks. Ultrasound diagnosis: Single or multiple cystic areas (>2 mm in diameter) in one or both choroid plexuses of the lateral cerebral ventricles. Associated abnormalities: Associated with increased risk for trisomy 18 and possibly trisomy
This case of a rare symptomatic choroid plexus cyst in the lateral ventricle, which presented with papilledema and decreased vi- sion, is the first such lesion found in an adult. Five earlier re-.