I didn't have a PEG, but I had tonsil cancer. I only lost about 10 lbs during radiation. My nurse recommended it siting patients do much better with it, but my oncologist didn't think I would need one. I did have a problem with Ethyol and I contribute that to not drinking enough water. I should have gone to ER, but I was too sick (104 temp, vomitting...). Without a PEG my WHOLE day was spent trying to figure out what I could eat or drink next. I'd stare at my drink for an hour and then take 3 hours to drink it. As soon as I finished, I tried something else. It was very time consuming to stay on top of nutrition and hydration. Overall, I was very lucky had little problems with the whole course of treatment. Of course, 2.5 weeks out of tx and I'm still staring at my drink from 2 hours ago.