4 Things You Should Know About Feline Fibrosarcoma

4 comments Mar 10, 2021by Denise Lessard


No pet parent wants to see their loved pet suffering. If you’ve noticed something isn’t right with your furry friend, it can be worrisome, especially if you fear a diagnosis of cancer.



Here at Zumalka, we are a group of experts who love and advocate for pet health. With our decades of experience in the industry, we are committed to helping thousands of pet parents like yourself understand their pet’s health and make informed decisions.


In this article we are going to look at feline fibrosarcoma: the causes, symptoms, life expectancy, and treatment. I hope you find all the information you need!


You can always look into our complete guide to cat cancer to learn more about different cancers affecting cats.



What Causes Fibrosarcoma in Cats?


You might have heard that there are studies showing a connection between vaccinations and fibrosarcoma cancer in cats. That is true, but it might be a lot less common than you think. Approximately 1/10000 vaccinated cats develop a fibrosarcoma where they received the injection.


As with nearly all other cancers, older cats are more at risk for developing fibrosarcomas as well.



What Are The Signs of Fibrosarcoma in Cats?


Fibrosarcomas are a type of tumor that affects soft tissues (like muscles, nerves, joints, and skin). They most often affect the skin. Often, the first sign of feline fibrosarcoma is a lump under the skin, and might be where they had received their vaccine. The lump will be firm and attached to the surrounding area, and it will be hard to feel the edges.


Eventually, as the cancer progresses, cats with fibrosarcomas will develop these symptoms:

  • Lethargy or lack of energy
  • Weight loss and loss of appetite


If you notice anything out of the ordinary with your kitty, make sure you get it checked out right away! The earlier you can receive a diagnosis, the better for you and your pet.



Life Expectancy of Fibrosarcoma in Cats


Thankfully, in most cases, cats who have been diagnosed with fibrosarcoma have a positive outlook. Depending on the severity of the tumor (for example, if the tumor has spread to other areas, or if it can be completely removed), cats can live up to 3 years after a diagnosis.


If tumors are large, or aren’t able to be completely removed, there is a high chance of recurrence and a shorter life span.



Fibrosarcoma in Cats: Treatment


The most common treatment for feline fibrosarcomas is surgery, and your vet might recommend radiation treatment before or after surgery as well.


Thousands of pet parents look for natural treatments to use with conventional methods. We are excited to introduce to you PIPTOPET, a natural product that has been used and trusted by thousands of pet parents!


You can feel confident knowing that PIPTOPET can be used for long-term and can help in your effort to boost your pet’s immune system during the fight of the disease.



If you have any other questions about fibrosarcoma, or any other health concern with your pet, please don’t hesitate to contact us so we can know how we can help!


Do you have a pet who has suffered from cancer? Share your experience in the comments below!




About the author

Denise Lessard
Denise Lessard


Denyse Lessard is deemed as the “mother” of Zumalka, which was established more than ten years ago to provide easily accessible natural products for pet wellness worldwide.

Besides being a trained alternative medicine therapist, Denyse also has expertise in homeopathy, naturopathy and iridology, reflexology, as well as Chinese medicine. She is a long-standing member of the Professional Union of Homeopaths of Quebec, as well as the Association of Naturopaths and Naturotherapists of Quebec.

Denyse’s philosophy as regards pet wellness is not just about only dealing with disease and illness when they get in the picture, but keeping animals in ideal health each and every day.

Find out more about Denyse when you click HERE.


  • Zumalka April 17, 2024 at 11:22 am

    Dear Diedre,
    We’re so sorry to hear about Willow!
    We are glad that you also reached out to us on our chat and received specialized help from our homeopath, we look forward to hearing how Willow responds to the remedies that we recommended.
    We are here for you every step of the way!
    Best regards,

  • Diedre Wynn April 17, 2024 at 11:17 am

    My cat, Willow, has developed a 2" tumor recently on her left hip. She is still loving, appetite is smaller, still drinks water, and poop is ok, but I’m noticing that she does sleep more. Would this Zumalka help? Against surgery because it appears to cause cancer to spread more and faster so that would be a last resort. Thoughts?

  • ZUMALKA March 27, 2023 at 12:39 pm

    Dear Sharon,
    Thank you for reaching out! I hope that this article has been helpful for Archie. And please be sure to check your emails as we have sent you some tips and suggestions to target his specific needs.
    We are here for you both every step of the way!

  • Sharon March 27, 2023 at 12:39 pm

    Our tabby cat Archie has a large fibrosarcoma. He is 13 years old. Our vet said he hadn’t seen anything like it in 12 years. We noticed it in December and it’s been three months or so. The tumor has grown large. It is on his left hip. He is still loving and still has an appetite, but we are noticing that he does sleep more; of course he is 13. But that tumor is so large on his left hip as if he’s carrying a backpack around. He’s a real trooper. (He may be constipated lately which we are concerned about. Is his digestion being affected?
    Our vet does not want to do surgery at his age. We agree, it would be brutal for him. We love him so much and don’t know when it’s time to say goodbye. He still seems active although he’s losing mobility. Needs help jumping up at times. Any suggestions? We are very attached to him. Also, we can’t board him to go on a trip. He can no longer take immunizations since that’s what caused the problem. Thank you.

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