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My dog has a skin-colored nipple-like lump. Is it a mast cell tumor?

Updated On September 23rd, 2025

Pet's info: Dog | American Staffordshire Terrier | Male | neutered | 12 years and 7 months old

My dog has a little lump sort of looks like a little nipple should I be concerned that it might be a mast cell tumor it's not red or anything it's like a skin color

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1 Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on May 23rd, 2018

It doesn't look like a MCT, but they can take on different appearances. It maybe a benign growth or skin tag. The only way to find out would be to have Buddy examined by your veterinarian. A fine needle aspirate can be done in the clinic to collect samples for pathology. This may provide a diagnosis. In the meantime, monitor it for rapid change or growth. Consider having it removed if it causes pain, impedes motion or changes rapidly.

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