I don't have any legal insight unfortunately, but since you mentioned posting for the reason of helping someone not go through what you have, I would just add that for anyone else going through the same thing, a second opinion might be useful. It sounds like you felt very confident in your suspicions of DVT, and a person finding themselves in a similar position, if possible, they might consider getting a second opinion if they are that passionate. I know this isn't possible everywhere, but where it is, it might be helpful (and evidently, lifesaving, at the least, time and money saving)!