Bumps in tail (Not vet advice)

[Cheesenugget]

Update

I had taken Nibbler to 2 different vets since his bumps appeared. Last vet did x-rays and bloodwork which the first vet failed to do.

It appears to be a cancerous tumor in his tail. The x-rays show that it had ate away some of his tail bone, and due to how close the tumor is to his cloaca and wrapped around his spine, surgery is not an option. Leaving any tumor cells behind will only regrow.

Without further testing, the vet does not know what type of cancer this is, but he is confident it is an aggressive type, considering how it appeared almost overnight. The bumps have not gotten bigger or smaller, but there is a slight discoloration on the scales, which the vet says it's a sign of necrotic tissue underneath caused by the tumor. Eventually, the tumor will burst and necrose, and/or grows upward toward the rest of the body and into the cloaca. His cloaca is clear so far so he can still poop. When that happens, it will be time to say goodbye. For now, he is eating, drinking, pooping, and overall still being himself. The vet does not think he is aware or in pain yet since he can be handled without issues.

I wanted to bring closure to this thread in the event someday someone is having a similar problem. And Nibbler is a he, not a she, and he is a big boy. The vet estimate his age to be around 10 years old (I adopted him at 7). We don't know when the tumor will get worse, the vet thinks this type of aggressive cancer will happen quickly, probably within the next few weeks or months.