My 8-year-old greyhound has a bony knee lump. Is it osteosarcoma?

I'm concerned that this lump has tripled in size in such a short amount of time, and the color of it as well. Otis should go back to the vet for this to get it checked out, and I would take him into his vet this weekend or first thing Monday. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the lump to get a sample of its cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. Once the cause of the lump is diagnosed, the vet can discuss treatment options if needed. I hope this helps!

Osteosarcoma is typically a very aggressive cancer so it would be unusual for the pet to be doing well one and a half years later. There are many types of skin masses including benign bone growth. I recommend to play it safe and to have the mass aspirated by your veterinarian. This will give you a better idea of what’s going on and if it’s something that will cause a problem in the future or requires treatment. I hope this helps.

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.

I would have this lump on Jake examined by a vet. It could be a cyst, a benign tumor, or potentially a malignant tumor. Any suspicious lumps should be examined by the vet. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the lump to get a sample of it's cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. I'd recommend having Jake seen by a vet tomorrow to have the lump examined and diagnose so it can be treated as needed.

Oh no, I'm so sorry Harvey has taken a turn for the worse! Yes, it is possible that this is cancer, and if he has a swollen front leg and can bare little weight, I would be concerned that he is suffering from osteosarcoma (cancer of the bone). I would have him seen by a vet immediately to have his leg examined and x-rays. This will be very painful for him, and the x-rays can diagnose if he does have an osteosarcoma. Unfortunately, an osteosarcoma is a highly malignant, fast spreading type of cancer. Amputation of the leg is an option, and with amputation, the dog can have an addition three months of life depending on if the cancer has spread or not. I would take Harvey into a vet now. I'm sorry :-(

With any new lump or lump that is changing, it is always best to have your veterinarian look at them and a fine needle aspirated can be done to obtain a sample of cells. If these cells look suspicious of a malignancy, then your vet can recommend surgery. From the photos that you have posted, my guess is that these may be benign, non-cancerous masses. These can still cause problems, though, by bleeding and getting infected. I would schedule Max for an exam at your earliest convenience so that you and your vet can weigh the pros and cons of surgery since he is a senior.

Thank you for using Petco Pet Education Center, formerly Petcoach! I can see the bump you are referring to in the wrist area. This can be a mass, bone cyst, fracture, or infection of the joint and is likely painful. I recommend having your dog seen by a vet as soon as possible. Your vet can take x-rays to determine exactly what is going on. i hope this helps and that all is well!