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My cat's neck lump disappeared then reappeared. Is it fatty tissue?

Updated On September 23rd, 2025

Pet's info: Cat | Bombay | Male | neutered | 8 years and 10 months old | 20 lbs

Hello, My cat had a ball shaped firm lump under the skin on his neck for a good few years. It caused him no pain/discomfort. We did not get this seen too as we thought it was nothing to worry about as he was his normal self. This lump disappeared for around 1 year. The same lump has now re appeared in the exact same place. He will be examined very soon as I know every lump should be seen too but just wanted extra advice. Do you think it’s more likely a fatty tissue as it’s been there for years?

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on October 27th, 2020

Hello. Only with a good exam & a needle aspirate can we tell the nature of a new or re-occurring lump. I am so glad that you realize that all lumps & bumps should be evaluated, but fortunately, not all of them are worrisome. I had a client that had a cat with a tennis ball sized lump attached to her neck. It was quite attached, so removal was going to be tricky at best. We sampled the lump multiply times over the years, & no signs of cancer ever appeared. The owner elected just to watch, & we recently had to put her to sleep after almost 19 years due to aging issues. The lump never bothered her. The fact that Pepsi's lump disappeared for awhile makes me think this is more cystic in nature, so less likely to be anything cancerous, so this is good. Hopefully, that is all your veterinarian will conclude. Good thoughts for Pepsi & thanks for contacting Petco Pet Education Center, formerly Petcoach.

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