CCAM?! Help!

Brittany
I just came back from my 23 week exam which was the big ultrasound where they look at all of her organs and make sure they're forming correctly and they found a growth between her heart and her lung. I see a specialist on Wednesday but in there opinion they're thinking its  ccam has anyone else dealt with this before? I'm trying so hard to stay calm for my baby and this is my first pregnancy by the way