Hi, Pam - and welcome:
I can understand your apprehension stemming from AN-type symptoms recently manifesting themselves and receiving a letter from your former AN physicians suggesting a new MRI scan, all so long after your surgery. It's a bit scary all right, but I have to concur with Eve ('jerseygirl') that times have changed, and these doctors are just being diligent. Back in 1989, when Madonna, Phil Collins and the B-52's were making hit records, AN surgery was less sophisticated and MRI machines were still somewhat primitive and hard to find. Today, AN surgical techniques have evolved quite a bit and MRI centers are fairly ubiquitous.
Unfortunately, regrowth of surgically removed AN's is not completely unknown, because even a few pieces of the often sticky tumor material 'missed' by the surgeon can eventually reconstitute into another growth. The surgeon's usual post-op assurance: "we got it all" may be comforting and true to the best of the surgeon's knowledge, but sometimes, ultimately, prove to be inaccurate. That is the regrettable reality.
This is partly why, aside from the much-improved accessibility to MRI facilities, doctors tend to order more follow-up MRI scans on AN patients (surgical and those who undergo radiation treatment) and to keep the patient under their supervision for much longer, today. My surgery and follow-up radiation occurred almost two years ago (see my signature at the bottom of this post for details) yet my neurosurgeon has scheduled me for MRI scans every six months, even though my remaining AN has shrunk and necrosis is clearly taking place. O.K., he's extremely conservative, but he said he'll probably have me undergo MRI scans at least annually for another 5 years or so, until he's totally convinced that the AN is dead and no re-growth is taking place. This follows both debulking surgery and radiation. So, Pam, you can see why your former doctors are recommending an MRI at this late date. The fact that you're experiencing AN-type symptoms right now is very likely coincidence. In any case, once you've had the MRI done, you'll know for certain and, we hope, will be able to rest easy. Please let us know.
Jim