I found this on a web site and have copied and pasted it, hopefully it will make you feel more at ease. It really annoys me that people are sent home from ultrasounds having been given news about some abnormality but are not given any information. My baby was a high risk downs at an early scan and they were so negative that I was a mess for days.
The choroid plexus is an area of the brain that is not involved thinking or personality. Rather, the choroid plexus makes a fluid that protects and nourishes the brain and spinal cord. When a fluid-filled space is seen in the choroid plexus during an ultrasound, it is called a choroid plexus cyst (CPC). "We don't know why, but between 1 and 3 percent of all fetuses will manifest a CPC at 16 to 24 weeks of pregnancy," says Dr. Roy A. Filly, a Professor of Radiology and of Obstetrics, Gynecology and Reproductive Sciences and Chief of the Section of Diagnostic Sonography at University of California, San Francisco. CPCs can be found either on one side of the brain (unilateral) or both sides (bilateral). They can vary in size and shape, from small and round to large and irregular. Some fetuses have more than one.
Regardless of their number, shape or size, choroid plexus cysts are not harmful to the baby. "I am not aware of a single instance where a CPC caused damage to a fetus," says Dr. Filly.
Dr. Peter Doubilet, a Professor of Radiology at Harvard Medical School, agrees, "That's one very important fact. CPCs are not harmful, and they nearly always go away by the third trimester of pregnancy."
Hope all is well and that you can get back to enjoying your pregnancy.
Nikki, Brissie, mum of 3,