Hello and Welcome. I'm glad you found YT - I'm sorry it was under these circumstances
. I wish I knew more about this specific problem, but I don't. I do know that cysts can fill, as your doctor seems to imply. So, he will remove the ones OUTSIDE the stomach? What about the ones you mention inside the stomach? Will he aspirate/drain those?
I wonder too, will the cysts continue to appear elsewhere?
I am so sorry you're going through this, it must be just overwhelming to think about. I can't imagine. My heart really goes out to you.