Girls, anyone encountered a similar problem? We had an ultrasound of o…

Girls, anyone encountered a similar problem? We had an ultrasound of our son's head last month, they said we have cysts, but there's nothing bad in them, as these are cysts that dissolve by half a year or a year, then we needed another ultrasound in six months, but then he was sick, didn't go, yesterday we went for an ultrasound, they said the stomach pouches in his head were enlarged, the sonographers didn't explain anything, is it dangerous, do we need to treat it, they told us to go and ask your pediatrician, I will go on Monday only, now I'm all messed up since yesterday, already everything worst consequences in my head turned upside down