Simply Koi and More Koi

A while ago i spoke about one of my fish that had a lump come up (cant find original post)
it was drained via syringe. what came out was a weak tea colured fluid that was like water. so much i just squeezed gently and it spurted out
it stayed ok for a good while but has now returned and is getting pretty big fast!
the fish is not bothered by it yet but this time its growing rapidly. i could drain again but something is obviously wrong inside it as if the fish is holding on to fluid.
Any advice would be greatly appreciated.

yes drain it again but lets have a look where it is with a photo please

dunc

Ok duncan
will get some picks tomorrow.

Ok i have attempted to take a couple of images

yes its an abscess and needs draining if it continues only you can decide the next step

dunc

I had the same thing, hoping it would go away but the inevitable had to happen in the end and I put it to sleep. It just got bigger and bigger

yes i am beginning to think the same thing it is even bigger than the first time so i may decide that its time to euthanise.
i have drained again but it seems to be a huge cavity of loose skin afterwards that is i feel just going to fill again. shame was a pretty fish