Hi, Jim - and welcome to the ANA Discussion Forums.
As the previous posts illustrate; feeling scared, wimpy and, on top of that, guilty because you feel scared and wimpy is a very common reaction for AN patients. A doctor looking at our MRI scan and saying the words "brain tumor" always has a chilling effect on rational human beings and for most of us caused a knot in the pit of stomachs and a definite tightening of the gluteus maximus muscle. Often, we don't even hear much else he says, including the words "benign" and "treatable". Believe me, your fears are normal and nothing to be ashamed of or apologize for, at least not here. We know how you feel. No one wants to face AN surgery and even those of us who have done so and came through it successfully with few or no complications would gladly pass on that particular experience. It isn't the worst thing in the world but it sure isn't something one looks forward to, either, so I understand your feelings of anxiety.
As Steve and others have indicated, MRI scans can vary and there is always a margin of error. I concur with my fellow moderator, the able and astute Steve, that it's doubtful your irradiated AN has resumed growing. Swelling and less-than 100% precise MRI scan images may be the culprit but until your next MRI session, I wouldn't allow the fears of re-growth and possible surgery to dilute your quality of life. No need to be superficially brave and inwardly tremble, simply chose to wait until your next MRI scan before you allow your concerns regarding possible AN removal surgery to control you. To put another way, as my late father would have said it: "don't buy trouble". Besides, you can always come here to vent and we're always supportive and understanding because we've been where you are - well, some of us have, anyway - and we all survived. We're not heroes, just vulnerable human beings that need support and assurance, just as you do, so we're eager to offer it it when we can. I hope you'll accept it and use the forums as often as you feel the need. We're here for you.
another Jim