On an MRI,what does a tumor look like?
It sounds to me like you have a sinus infection or sinus retention cyst. If you were looking at a T2 weighted image (and how would you know if it was a T1, T2, FLAIR, etc?), white is fluid. On a T1 weighted image, fluid is darker. We find issues with the sinuses fairly often when we do brain MRIs, and they can be just on one side of the sinuses. Compare what you saw with this: http://www.flickr.com/photos/bionerd/268… I also want to say that I think your MRI technologist was an idiot. You should never show a patient their images, because we are not allowed to tell you what we think we are seeing. If this turns out to be a sinus infection/cyst, you will have spent all of this energy on worrying yourself like crazy over a benign, easily treatable/curable condition. It is like showing you your chest x-ray, then not being able to tell you that the large tumor looking area in the left side of your lungs is merel
