My dog's lump swelled after fine needle aspirate. Can it spread cancer?

Non-ractive warts and other growths which do not cause the dog to chew on them are usually not of concern provided they do not grow, or grow very slowly and are not oozing a discharge, bleeding or causing infection. That said, every growth should be examined by a veterinarian, as it could indeed be malignant. Previously benign masses can also turn into malignant masses. As for cancer cells spreading in the body from being ingested: that would depend on the cancer. If the mass is cancerous and just in the skin, it is likely that removing it with a good margin (healthy tissue surrounding it) may be curative. Your veterinarian will have to examine the mass and palpate it and may want to remove it right away, or do a fine needle aspirate to determine whether it is indeed a cancer. Since it is bothering your dog and Nisha is chewing it , there is a chance that it could get infected, another reason to have it examined ASAP.

I would be concerned that the swelling is another mammary mass or lymph node from the mammary area. Unfortunately, needle aspirates on mammary cells can be hard to determine if malignant or not. I would recommend taking Aries in to your vet tomorrow to discuss the next steps. I think your vet will also suggest chest xrays to make sure there is no evidence of cancer in her lungs.

Thanks for using Petco Pet Education Center, formerly Petcoach! The fact that it has been growing slowly is good though it can still be a malignant tumor and removal would be recommended if there is no evidence of cancer spread to other organs. It probably changed in size and shape as a reaction to the aspiration. Given that it is so close to her mammary glands this may be a mammary tumor. Further recommendations would be made after it is removed and the biopsy read out. Good luck and have a great day!

In my experience lymph nodes can be enlarged for days to week after a dental cleaning if the teeth were bad enough. However best thing to do is aspirate the lymph node and send out the cytology. This will tell you for sure why they are enlarged and help you not worry.

I would recommend a vet visit. The vet can do a needle aspirate and take a look at the cells. While this may be a location for a lymph node it does not necessarily have to be lymphoma. Enlarged lymph nodes may be due to cancer, or inflammation or infection. Or it's possible it's not a lymph node and may be another type of mass or swelling. I recommend a vet visit to try to see what is swollen and why.

The FNA was reported as "suggestive" not diagnostic - this would indicate some evidence of cell changes such as rapid/disorganised growth or poorly defined cells due to severe inflammation but not definitively cancerous. This is not uncommon as an FNA only looks at a small amount of loose cells and can often give inconclusive results. The rapid reduction in signs is positive that it may have been a benign, inflammatory process but unfortunately many tumours are also inflamed by their nature and do sometimes respond temporarily to medication! I would continue to monitor closely for any relapse as a precaution

Poor Precious! I know you are worried about you! Good news is that most mast cell tumors are easily distinguished on an fine needle aspire (FNA). The chances of it being a mast cell tumor is less likely but not completely ruled out. Also, the fact that it hasn't grown much and the cells on the FNA were very similar in size and shape means it is likely benign. I think you are making the best decision to have it surgically removed and tested. Also, it is likely more oval due to some local inflammation secondary to the minor trauma a FNA causes. I hope this helps!