Adrenal cysts, medical jellies, what can you tell me about them?

I just came back from a doctor’s visit and according to the doc I have a left adrenal cyst that they’re wanting to do an ultrasound on. He said that there’s a good chance that I’ll have to have it removed.

I’m online now, trying to educate myself. I thought I would turn to the collective, as well while I do a little searching.