My senior cat's lump changed size and texture. Should I worry?

Question

My 12 year old male cat developed a growth about 7 mm long by 5 mm wide last week, he leaked it at the beginning but not anymore. The growth went from soft to hard and has decreased in size. The vet prescribed Quadritop ointment. The cat is eating normally. Shoul I be concerned? Pet's info: Cat | Mixed Breed | Male | neutered | 18 lbs

Daniel Fonza, DVM · Accepted Answer

Hi there and thank you for using Pet Coach to address your concerns. From the picture and your description, I would be concerned about this mass being cancerous. If your veterinarian has not done any testing on this mass I would suggest having this done. A test called a fine needle aspiration can be done to help better determine what the mass could be. This test entails the vet inserting a small needle into the mass and looking at the cells under the microscope to help determine what the mass could be. With its appearance and the fact that it has fluctuated in size, I am concerned about this being a cancerous tumor such as a mast cell tumor. I hope this helps! Please let me know if you have any other questions or concerns.

My senior cat's lump changed size and texture. Should I worry?

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