I have no answers for you, sorry, but I would like to post a side question that another answerer may also know...
I want to know what a T2 flair is... I had that on my spinal MRI, or maybe it was T1, can't remember but it was T something flair, I thought it mean a malfunction in the MRI machine over a thoracic vertebra, Lol! Now I am curious what it is.
There were some abnormal areas seen in your brain that might be caused by blood pressure/circulation issues ("ischemic changes") or demyelination (MS is a demyelinating disease, but there are several others). These are included in the "differentials" which are essentially the radiologist's best guesses as to the cause of what they saw. It will be up to your neurologist to narrow it down based on your full clinical picture (your history, lab results, clinical exams, etc.)
Katya, T2, T1, and FLAIR are simply names of various MRI sequences (the different rhythmic sounds you hear when you're in the tube are the different sequences running). If an MRI report says "FLAIR sequences seen in image..." it tells whoever is looking at the images where they can find exactly what is mentioned and gives a hint at the nature of what was seen. Different sequences tease different types of things out of 'hiding'.
FLAIR is an acronym. https://en.wikipedia.org/wiki/Fluid-attenuated_inversion_recovery and T usually stands for time. (T1 = inversion time)