My cat has a lump on her back...?

I have a 12 year old cat who, seemingly overnight, has developed a medium sized, blob-type lump under her skin behind her right shoulder. It felt warm to the touch, and moved pretty freely under the skin.





She went to the vet a week ago for her annual checkup and got some vaccines- however, she has never had an allergic reaction before, so I doubt it is that. The blob moving under her skin doesn't seem to cause her any pain (she doesn't flinch or make any kind of protest to touch) and she is walking normally. She has lost a pound and a half in the past year, and is in general good health. I'm worried, has anyone else experienced this?
My cat has a lump on her back...?
Hmm..given her age, i would say its possibly a fatty tumor. But that's not necessarily much to worry about. They don't usually show up that fast, but its possible its been there a while and you overlooked it.





I'd call your vet and ask their opinion.





It could also possibly be a cyst, but those tend to be a bit firmer to the touch. It could also be the site where the cat recieved its vaccines, if it was injected in a way that left it suspended rather than fully absorbed.





Call the vet and they'll eliminate a few possiblities for you. ^_^
My cat has a lump on her back...?
Call the vet right away.
Reply:my moms cat had this same (sounding) thing. He had a small black bump (you could see it through the white in his fur). The vet said it was like a pre- cancerous lump, but that because it was found right away it wasnt no concern. He had to get it surgically removed, only about 3 stitches and he wasnt in much pain.. a lil groggy for the say (like cats are when they sometimes get shots) but after that he was fine. Make sure to have your vet check it it.. it may be sumthing that is nothing but might be something that can get worse
Reply:It's probably just a fatty tumor. My dog, who is 13, has one of these on her back. They're pretty much painless to the animal and are harmless as well. I'd bring her to the vet just for the peace of mind, but I'm sure she'll be fine.
Reply:I had a cat who had this (seemingly) around the age of 7. Hair fell from it very easily. Like, If I pulled the hair it would just fall out. It grew in size pretty frequently as well. When we took him to the vet, they told us it was a cancerous tumor. We paid to have it excised but it just grew back and eventually lead to his death. We spent so much money truing to save him. It was a very sad event in my life. So, please call the vet right away and have your cat seen. It just may make the difference between life or death. Blessings.
Reply:My kitten has a blob type lump on his stomach and we took him to the vet, who said it was a hernia. They are very common in cats and usually the cat can live quite happily with one and if monitored they cause little problem, if there is any complications surgery to repair the split tissue or membrane can be done. I suggest you see your vet and get their opinion.
Reply:My puppy had that right after his rabies shot. It is nothing to be worried about. It will go away in like a week. Don't worry! It is just an irritation from the shot.
Reply:it is almost definitely a cancerous growth that came from the rabies shot. have it removed, it could cause death. it is not an 'allergy' to the shot-- these shots are inherently cancerous. Indoor cats dont need rabies shots or any other shots. If an outdoor cat, all next shots should be in the leg, not the back. also, next shot should be titured.[pronounced 'tie-turd']