How quickly does cat breast cancer spread to lungs and become fatal?

There is no correct answer to help you. The sad truth is mammary timors in cats are 85% malignant, so it is cancerous cells that are replicating and spreading once the first growth is noticed. Complete surgical removal of the entire mammary chain is recommended for best results but if it is already spreading then that will not help much as you would not have been able to address all of them.

I'm sorry to hear about Duchess. If the lung cancer involved a single tumor (this is rare), surgical removal of the affected lung lobe is possible but is a very invasive surgery that requires a board certified veterinary surgeon. Due to the level of invasiveness and small chance for the surgery being curative, I do not usually recommend pursuing this. If the lung cancer involves numerous small metastatic tumors in the lungs (which is more common), there are frankly no good treatment options. Chemotherapy can sometimes slow the spread and growth of those tumors, but by the time the cancer has spread to the lungs, chemotherapy rarely provides a significant change in the prognosis. For these reasons, I usually do not push too hard for referral in cases of lung cancer, but instead focus on supportive care and trying to maintain quality of life for as long as we can keep the pet comfortable. I hope this helps. All the best to you and Duchess.

First off, I'm very sorry that Mama Kitty has mammary tumors! Unfortunately, 90% of mammary tumors in cats are malignant. I think your best option in this case is to enjoy the time you have left with her. Spoil her, give her lots of love and attention, feed her favorite foods (but not ones that are toxic!). Spend as much time with her as you can. Monitor her in regards to her quality of life, and if that starts to decline (i.e. she stops eating, stops drinking, loses more weight, becomes very lethargic, appears to be pain), then it's time to discuss with your vet humane euthanasia. It's a hard thing to do, but it will allow her to go peacefully and without any further pain. You can keep in touch with your vet to discuss her quality of life which will help you make an informed and objective decision. I work for a home euthanasia service and help owners with these decisions all the time, so if you'd like to talk with me further, you can request a consult with me. Just click the consult online button under my answer. Otherwise, again I'm sorry and I hope this helps somewhat.

Poor Kitty! Mammary tumors can grow and rupture, so it is possible that she has a mammy tumor that has burst through the skin. It is important to make a decision quickly about treatment with mammary tumors in cats, as 90% of these tumors are malignant with rapid spread to nearby lymph nodes and mammary glands. The sooner she receives treatment if she has mammary cancer, the better for her. I would recommend making a decision as soon as possible regarding treatment for Kitty.

I am so sorry about Shadow and the diagnosis of oral SCC, unfortunately the prognosis for cats with oral SCC is poor and most cats will have survival times ranging from 3-6 months. Cats with small tumors located on the lower jaw (mandible) that are treated with surgery have a better chance of surviving for one year.

Thanks for using Petco Pet Education Center, formerly Petcoach! If she really is doing this poorly, it is very important to have her seen by a veterinarian as soon as possible as I worry she may be unstable. If this is all confirmed to be due to her cancer and you are not proceeding with treatment of the cancer, euthanasia may need to be considered.

It depends on the type of cancer. Some malignant ones spread quickly, while others are slower. In addition, it can happen that the cat has had cancer for a bit, but only shows signs when they are already really sick, making it seem like it came on suddenly. I’m sorry Mika has cancer!