This has isn't anything even remotely new, so unless it's a ridiculously patient tumor I don't actually think that's it. Funny you should mention, but I had a scare about that when I was a kid. Had a shitload of MRIs done about twenty years ago, for these and other reasons. They did actually turn up a crazy web of extra veins in my left parietal lobe, which is responsible for sensory integration, visual spatial skills, and number relations. Which might have something to do with the weird sensory crap and a touch of dyscalculia, but I literally test way the fuck off the scale with visual-spatial stuff, and I'm great with formulae and algorithms, though I can't add 2 and 2 without getting 5 half the time. The structures weren't doing anything weird and nothing moved around in the years between scans, so whatever's going on is probably harmless. It was mentioned that they're the sort of thing that can account for learning disabilities but, just... haha. No. Let's just leave those in there then. I wasn't all that keen on getting my skull bolted in place and filled with gamma rays, anyway. And I'm kind of tickled that I apparently have a weird mutant brain.