Here's a news story that bears an eerie resemblance to the urban legend about the guy who shares a drink with a stranger in a bar and wakes up to find his kidney gone. This news report involves a German professor who goes on holiday to Costa Rica and visits a hospital to have them check out his swollen left foot:

When I got to the hospital they put me on a bed and I heard the word amputate. I tried to protest, but before I knew it they had given me drugs to black me out, and when I woke up I was at the departure lounge. My suitcases were by my side - and then I realised my leg was missing. I couldn't move, and when I checked my wallet I found that £200 had been taken out and replaced with a receipt for the amputation.

Wow! Talk about bad luck. Of course, this story appears on Ananova, so it's anyone's guess whether it's actually true.