[crpatino]

Do not put seriously ill anywhere on your resume.

So what if you got bad grades as an undergraduate? If you did ok on the masters, everybody will think that you was a lazy guy who's grown up since then. Also, if your grades where remarkably bad, don't put those in. People will assume they were average bad, now awful.

On the other hand, if you disclose you have had serious health problems, you raise a yellow flag. Does not matter if you have no long term sequels, if there is a suitable candidate with no yellow flag, H.R. is going to take the safe bet. You will not even get a chance to explain yourself.