Why does my dog have a red, painful lump on his leg near the ankle?

Question

My 2 yo collie/husky x has a red lump on rear leg near ankle. It is about 1cm diameter no pus or blood but does look like a burst abscess. He has no lump and is behaving normally but it does hurt when I touch near it. Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered

Ana M, DVM · Accepted Answer

Thank you for submitting your question regarding Gizmo. I recommend that he sees his veterinarian. If it is a wound that has opened up, then he will likely require antibiotic treatment. If it is a mass growing on his skin, then a procedure known as a fine needle aspirate will likely be performed. The veterinarian will use a small needle to collect cells to evaluate under the microscope. This will hopefully give you a diagnosis on the type of mass. A histiocytoma is a common benign growth on the extremities of young dogs. A mast cell tumor is an aggressive form of skin cancer that can have the same outward appearance. In the meantime, do not let him lick the area. I hope this information helps!

Why does my dog have a red, painful lump on his leg near the ankle?

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