Gosh folks there seems to be a lot of guilty feelings out there. :p

I am sorry that my reply came across as unhappy (on my part). I too have an in/appropriate sense of humor and a pretty thick skin so I did not feel any of you were picking on me at all. I clarified my point for those whom jump in in the middle (new people) just so they didn't think my comment was intended as humor or to set up the joke for you. (I can be the straight man if any of you want to hit the road with an act).

My mistake for imagining that you guys had not covered the subject well before I got here! Pretty big ego I guess (runs in the family).

Cheers

P.S. Hydrocephalus is caused by excessive cerebrospinal fluid not blood or lymph so I wouldn't believe that either radiation or neck surgery would cause that.