Most of us didn't begin to suffer the evil effects of rad Tx until the week of the 20th Tx (4th week)and even then they start off mild and get progressively worse culminating a few weeks post Tx which for most is week 8 to 10 so assuming he's getting the same dose each Tx that most of us got, he should escape the worst. I have never encountered one on this site that only had 25 and everyone can react somewhat differently to the same Tx so lets hope what I just said comes true.

As far as the nasal tube, which I had for 2 weeks in the worst part of my reaction to the Tx, that being weeks 2 and 3 post radiation, I wouldn't think that he will need one due to what I said in the first paragraph. If he does, it was not a big deal for me even as bad as I felt and it actually helped me hydrate and nourish myself at a time when I definitely needed outside intervention. It goes in without surgery and in my case with minimal discomfort; was easy to use and keep clean and with my doctors approval, I pulled it out myself.