Lessee...the worst one was being definitively told I had sarcoma after an MRI... and spending six agonzing weeks wondering if I was going to lose my right foot and leg from the knee down...until I found a doc with some BALLS to cut it out and let me know it was a benign item. I have had four doctors (two of them notable) who gave differing diagnoses on the cause of my dysphagia (all of them incorrect). And I still choke when I eat. One of those doctors told me he was pretty sure I had a Pancoast tumor, which upon Googling, scared the living daylights out of me until the CT came back all clear. (It's an odd lung cancer) More recently, a lump in my abdomen that flipped out my GP turned out to be overdevloped muscles from snowboarding. Had surgery on a wonky knee (discoid meniscus with horizontal tear) by a doc whom I later found out had *zero* experience with that particular deformity. I'll see how snowboarding affects it this season (with a better brace) before I try again, with a different surgeon. Anyone had a misdiagnosis...or three....with a doc? I think Carlin said it best - doctors are guesswork in white coats. Side note - if you Google a combination of symptoms, you will in all likelihood scare the crap out of yourself. Don't Google symptoms.