Updated On September 23rd, 2025
Pet's info: Cat | Mixed Breed | Male | neutered | 9 years and 3 months old | 22 lbs
My cat has a very large mass between his chest and the vet doesnt know what it is do you have any idea what it may be
1 Answer
Published on September 1st, 2018
Oh dear! I'm sorry to hear that Bean is having this problem. Unfortunately, there is no way to diagnose what the mass is just by looking at it - he would need to have a biopsy or a fine needle aspirate (FNA) to get a sample of the tissue in the mass for analysis in order to get a specific diagnosis. In general, I can tell you that lymphoma is a common cause of a mass in this area in cats, but there's no way to know for sure if this is what Bean has without further work-up. For a mass or tumor in this area, I would normally recommend referral to a specialist for advanced imaging studies, biopsy or FNA, and discussion of treatment options. Your regular veterinarian should be able to help you set this up, if you wish.
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