Question: fetus has cyst on brain?
Answer: In about 1 to 2 percent of normal babies – 1 out of 50 to 100 – a tiny bubble of fluid is pinched off as the choroid plexus forms. This appears as a cyst inside the choroid plexus at the time of ultrasound. A choroid plexus cyst can be likened to a blister and is not considered a brain abnormality.