Trying not to stress. Information on Dandy Walker Sydrome?

I’m 23 weeks pregnant with boy/girl twins a few weeks ago they found a cyst on baby A brains and last week I had an MRI. And this is what the doctors note were at the bottom, I don’t know exactly what it means but I googled dandy walker variant and now I’m getting scared.

IMPRESSION:

1. Twin intrauterine pregnancy with findings of some inferior vermian hypoplasia. This could represent a normal finding however, can be associated with a Dandy-Walker variant. Recommend continued follow-up and postnatal imaging.