Snoopy's correct, the doctor is the best person to tell interpret your scan, because although you can make fair guesses as to what it is saying, without the images it is difficult to gage the severity of what they are describing.

The stuff that I take away from the language is that you a) had a previous lesion that isn't growing, b) you have flair, which isn't normal but again without the images don't really know how big of a deal it is and how it may impact you, and c) other than that it seems ok? You didn't have a stroke (acute infarction)! Yay!

Go back to your neuro and see what they have to say. Something else that is important that your text didn't say are the areas where the lesion and flairs are located. MS has some locations that are usually considered "typical" and where they specifically look for damage...not that it always works out that way.

Best of luck!