I've finally returned to work full-time! Hurray! I got all the "t's crossed and the i's dotted" from the insurance company (bet they're glad not to have me around anymore!).
The results of my MRI were fantastic! I'm cancer-free! That one "anomalous finding" was nowhere to be seen. Praise His Holy Name!
The results of my language evaluation were decidedly more mixed. The good news is that I've retained all my thought process; the bad news is that I've a rather marked defiency when I trying to think under pressure, quickly, or multi-task. I've been advised to make the most of my cognitive therapy, focussing on these areas, while keeping these areas minimized as best I can in the rest of my day. The positive news is that - potentially - it can improve, albeit slowly.
I've explained the situation to my boss, and he's willing to let me procede at my current pace, for which I'm very grateful!