My dog has a breast lump for years. What are the chances it's cancer?

Question

My 4 yr old yorkie has a lump near her breast. She has had it for two years with no other symptoms. What is the likelihood it is cancer?

Andrea M. Brodie, DVM · Accepted Answer

There is no way to determine whether a mass is malignant or benign by a description, growth behavior, or visual, I am afraid. The only way to determine that is by way of a Fine Needle Aspirate or biopsy and examination of the harvested cells under the microscope. The good news is that it is about a 50/50 split being benign/malignant and many are mixed tumors. Lumps can also be cysts or encapsulated abscesses, so I suggest you schedule an appointment with your veterinarian for an exam of the lump.

My dog has a breast lump for years. What are the chances it's cancer?

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