So sorry to hear about Max's condition
this sounds like pretty much what happened to my Mum's Norwegian Elkhound a few weeks ago - they took him into the vets looking off colour after he'd already had an op to remove a growth, but a scan showed pretty much what you've described, and they had to take the decision to put him to sleep straight away (he was suffering rather badly at that point)
It sounds like Max had a fantastic week, and the decision was taken before he suffered too much
Goodnight Max
xx
