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My dog has a baseball-sized lump on her shoulder. What is it?

Updated on September 23rd, 2025

Pet's info: Dog | Cocker Spaniel | Female | spayed | 39 lbs

My cocker spaniel has a mass on her shoulder and its the size of a baseball what is it???

1 Answer

Most Helpful Answer

Andrea M. Brodie, DVM

Answered By Andrea M. Brodie, DVM

Veterinarian

Published on March 3rd, 2018

Without seeing the actual mass and palpating it, it is impossible to give you an exact diagnosis. Any mass this size is very concerning, as it could be a large tumor, a large hematoma or a cyst or an abscess. Seeing that Chloe is fairly heavy for her breed, this could also be a harmless fatty tumor (lipoma). It would be best to make an appointment with your veterinarian for an exam. He can then look at the mass and determine whether it needs to be removed or can be drained.
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