Hi Marie,
My daugter just had surgery Tues. We're still not sure if it's a colloid cyst or tumor. What I can tell you is get the very best surgeon you can. The skill of the surgeon makes all the difference in the world. Ask about his or her experience with these types of cyst. You want the Dr that has done more than a few of these. Also ask them for best and worse case scenario so you are not caught by surprise when you are in no condition for surpirses.

Look the Dr up on the internet at the medical board for your state. You can google for yourstate medical board.

Best of luck. AC