Awh poor guy ; that's tough for sure , I lost my good buddy Ricky (posted about him on twetch back in the day) he was 9 years old, had bumps on him, not massive or anything but noticeable, took him to the vet many times asking about them , was told fatty deposits and not to worry, then one Saturday morning came downstairs and he was out of it, just panting but looked so lost, too him for weekend emergency vet service out of town, apparently a cyst broke in his stomach and he bled out internally, had to put him down on the spot, still breaks my heart so much to even think about it, i know the feeling to loose a pet, I'll stop there with the sad stuff but I'm sorry for your loss , truly. A day never goes by that I don't think about that situation when I look at my pets, try to enjoy the good times but it's like a sliver in my mind ... Ugh ❤️🩹