Wow Caco, you're in the thick of things now! I was spared the mucus trouble (no idea why) and never lost the ability to swallow, exactly, but did have nausea and gagging trouble. As I think you know I managed to avoid the feeding tube, but I *did* lose 20 lbs quite dramatically (I charted it), and lived on Ensure. In my case, if I had lost too much weight, they would have insisted on the tube. Having pneumonia on top of everything, oh my.

47 yr old male non-smoker, social drinker, fit. Jan'10, Stg3 rt tonsil+rt neck SCC, HPV+, rad+chmo Vancouver Cda. 2yr clear Apr'12 London UK. Apr'13 mets recur to lymph btw left lung & aorta, 3x Cisplatin+5FUchemo+20 rad, was all clear but 6-mo PET-CT shows mets to pleura around left lung, participating in St 1 trial of GDC-0980. GDC lost effect and ended July'14, bad atrial fibrillation requiring hospitalisation, start more standard chemo 10 Sep 2014.
Sadly has passed away, notified Jan 2015.