I just found a lump on my dogs paw. It appears not be an abscess, etc. it is on the outside of his back paw pad. I have a picture if there's a way to add that. It's scaly just like the rest of the paw pad
Hello, my name isXXXXX and I have over 20 years of experience as a veterinarian.
I'm sorry to hear that Jack has a lump on his foot next to his paw pad and I understand your concern about it.
This may be a benign growth called a histiocytoma.These growths pop up quickly, grow quickly for a month or so and then tend to regress and resolve on their own within 2 to 3 months. They are most common inyoung dogs on the face, ears and legs and paws. But older dogs can get them tooand if they scratch or lick at them they may not resolve.
If the dog licks the mass it will hang around longer or can get infected. You can use a drop of cortisone cream on them to reduce inflammation. If they are scratched open I would recommend an antibacterial ointment instead. And I would recommend an E-collar for him if he is licking to try and stop him from licking any more. Even if this is a histiocytoma if it doesn't slowly decrease in size or resolve completely in 3 months it should be surgically removed as it is unlikely to go away on its own at that point and can lead to a secondary infection.
Another possibility is a tumor called a mast cell tumor. These have variable degrees of malignancy, some can be treated with just surgical removal, some are quite aggressive and will spread deep into tissue and to local lymph nodes. The only way to know for sure how malignant the tumor is is to remove it and have it biopsied.
Other tumors that this may be include a basal cell tumor but these are much less common in dogs then in people or a melanoma.These tend to be fairly benign behaving in the skin and respond to surgicalremoval.
A plasma cell tumor is another possibility.
Of these tumors none resolve completely on their own except a histiocytoma. Mastcell tumors will change in size if they are bumped, and then go down slightly in size but never fully resolve on their own. If you want to be absolutely certain of a diagnosis your veterinarian can perform a fine needle aspirate on the bump. He or she puts a tiny needle in the bump, draws cells out, and looks at the cells under the microscope to identify them and give you a tentative diagnosis.
Best of luck with your pup, please let me know if you have any further questions.
I understand that you may be strapped financially after paying for a previous expensive illness.
I am glad to hear that the bump isn't painful for him but all that means is that an infection is much less likely then a mass as the cause.
Though the masses I listed are the most likely possibilities no one can tell just by looking at a lump. There is really no way to know what this lump is without at least an aspirate of the mass, and sometimes we need to biopsy or remove the mass to get a definitive diagnosis.
I would call his veterinarian and ask how much a fine needle aspirate would cost. It is a relatively quick and inexpensive test because he would not need to be sedated and we can usually perform the test ourselves in the office.
Yes, the picture came through quite nicely.
I see a pink raised mass involving tissue under the superficial skin at the junction between the paw pad and haired skin.
If you don't mind my asking what was his previous illness?
If he has a history of previous mast cell tumors then I would be highly suspicious that this is another one.
Thanks for the information.
It sounds like he had a tick borne illness. There are times that we get false negatives with testing but with a large spleen, fever, and a good response to Doxycycline that seems the most likely possibility.
I would not expect to see a mass like he has now caused by a tick borne illness, so I think that this is a new, independent problem for him.