I have, going to and from my GCS surgery. It wasn't TSA, but the Canadian airport security is probably pretty similar. They send you through the body scanner.
I had heard about the scanner, and that there is a pink button and a blue button, for perceived females and perceived males, respectively. Just as I went into the scanner for the flight to Montreal, I whispered to the guard that she should press the blue button. I figured that I would rather have the machine register an anomaly on my top rather than my bottom if they are going to have to do a pat-down. As it was, the machine didn't think my boobs were big enough to register as an anomaly with the blue button. (Gee thanks, machine!)
Coming back from surgery, of course, there was no potential anomaly to worry about. I was in a wheelchair, since I was less than a week post-op. I had to get out of the wheelchair for the scanner. Everyone was very considerate.
My driver's license was up to date by that time, so identification was not an issue.
