Buckaroo Banzai: You can check your anatomy all you want, and even though there may be normal variation, when it comes right down to it, this far inside the head it all looks the same. No, no, no, don’t tug on that. You never know what it might be attached to.
See, this is the point, for me, where it started to look like a problem. You know, I wanted to sacrifice the precentral vein in order to get some exposure, but because of this guy's normal variation, I got excited, and all of a sudden I didn't know whether I was looking at the precentral vein, or one of the internal cerebral veins, or the vein of Galen, or the vascular vein of Rosenthal. So, on my own, to me, at this point, I was ready to say that's it, let's get out.