Sorry to hear Faolan is having health problems. He is quite an impressive age though so he has lived a good life so far!
I did see your post on my other thread; I suppose because of his age and the locations of multiple tumors the vet thought it was best to just manage with some pain relief rather than put him through the stress and risk of a big surgery.
Custard managed to get through his ok so far but his tests came back as a cancerous tumor so I'm glad he was able to have it removed. He is half a year younger than Faolan though and his growth was quite isolated so I guess this worked in his favour.
Very cute pics of Faolan btw, hope he is feeling much more comfortable now.