Fibrosarcoma Average Cost

From 469 quotes ranging from $2,000 - 10,000

Average Cost

$6,000

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What is Fibrosarcoma?

When describing feline fibrosarcoma, vets explain that this type of cancer begins in individual cells within connective tissue, as well as just under the surface of the cat’s skin.

Fibrosarcoma is a form of soft-tissue cancer that is common to cats. Fibrosarcoma is aggressive in the cells where it first appears, but slow to spread to other body organs or systems. Fibrosarcomas begin in the fibroblasts of the skin (cells in connective tissues) and in subcutaneous (under the skin surface) connective tissues. While some grow slowly, others may grow more quickly. After being surgically removed, fibrosarcomas can grow back. This type of tumor is most often caused by papillomavirus, the virus that causes warts.

Symptoms of Fibrosarcoma in Cats

The cat’s owner is most likely to notice lumps just underneath the surface of the cat’s skin. These lumps can appear anywhere on the cat’s body: the head, legs, in the mouth and anywhere else on its body. Other symptoms include:

  • Lumps may be fleshy or firm
  • The cat may not feel pain from the lumps
  • Lumps are irregularly shaped

Fibrosarcomas can also develop inside the cat’s body; usually on its spine, in the pelvis, or in its ribs. Advanced fibrosarcoma causes the cat to:

  • Have difficulty eating
  • Lose its appetite
  • Become dehydrated
  • Painful walking
  • Become lethargic
  • Develop mysterious bleeding in its mouth

Causes of Fibrosarcoma in Cats

Cats can develop fibrosarcoma for one of three reasons. If the cat is older, it may be more prone to developing this particular form of cancer. 

Some vaccines have been linked to the development of fibrosarcoma, but these occurrences are rare. When fibrosarcoma develops as the result of vaccinations, it is called “vaccinosarcoma” or vaccine-induced sarcoma. While vets still recommend that cat owners have their pets vaccinated, vets will give one vaccine, such as the rabies shot, in one leg, then give the feline leukemia (FeLV) vaccine in the opposite leg. 

The adjuvant within the vaccination is usually aluminum. This ingredient helps to keep the killed virus within the area where the injection was given for a short time so the body can develop an immune response. By keeping the killed virus in one small area, it makes it easier for the cat to develop a localized inflammation, which can stimulate the development of the sarcoma. Cat owners should discuss modifying their cat’s vaccination schedule with the vet.

The third cause is a mutant form of FeLV, called feline sarcoma virus or FeSV, which can lead to fibrosarcoma. This occurs in younger cats, who develop multiple tumors.

Diagnosis of Fibrosarcoma in Cats

If the vet suspects a fibrosarcoma, they will run several tests. First, they will give the cat a full physical exam, from head to tail, so they can rule out any other causes of the lumps. Making an early diagnosis while the cancerous lump is still small gives the cat a higher chance of recovery and survival. Early detection also allows the vet to prescribe more options that give the cat a more positive outcome.

They will order routine testing, such as a biochemical profile, urinalysis and a complete blood count. These tests allow the vet to rule out other illnesses, other than a low lymphocyte count.

Next, the vet will order X-rays or a CT scan, which allow them to see the lump and whether the cancer has spread to other parts of the cat’s body. An X-ray shows a fibrosarcoma as a soft tissue mass.

Once the vet begins to narrow their diagnosis down, they will do a fine-needle aspiration or biopsy of the lump so the cells can be examined under a microscope. 

Finally, the vet does a FeLV test. This will allow them to determine if the fibrosarcoma has developed because of FeSV.

Once the vet has made a diagnosis, the pet owner will need to work with them to start cancer treatment and begin an at-home treatment regimen so the cat has a better chance of survival.

Treatment of Fibrosarcoma in Cats

Treatment options depend on where in the cat’s body the cancer is located. It’s much easier to treat cancer that has not spread to other organs, because they spread with nearly invisible tentacles. This makes complete eradication of the cancer even more difficult because, if any cancer cells remain in the cat’s body, new cancers can develop.

Surgery

Depending on where the cancer is located, the vet may suggest surgery to remove the cancer, along with the removal of some of the healthy tissue. Limb amputation may be necessary.

Radiation

Post-surgery, the vet may prescribe radiation, which helps to destroy any remaining cancerous cells. Radiation treatment begins about two weeks post-surgery.

Chemotherapy 

Chemotherapy may also be prescribed. This can begin before surgery so the tumor can be shrunk, making removal easier. After surgery, chemo may be given again so remaining cancer cells can be killed off. While humans are likely to lose their hair, chemo given to a cat doesn’t lead to them losing their hair. Instead, it will be tired, sleeping more than usual for a day or two. 

The vet may also recommend a combination of surgery, radiation therapy, and chemotherapy. When a cat with fibrosarcoma has undergone chemo, it may survive for two or three years after diagnosis and treatment.

The vet may opt for oral medication to treat the cancer. If the cat experiences pain symptoms, the vet prescribes pain medication. Some vets are open to complementary treatments, including immunotherapy, acupuncture or nutritional therapy.

Recovery of Fibrosarcoma in Cats

Recovery from fibrosarcoma depends on where the tumor is located, how long it has existed in the cat, and its grade. The grade is determined by the frequency of cell division within the tumor. 

Very young cats (up to one year old) are more likely to have malignant tumors. If the cat dies from fibrosarcoma, it is likely because of the recurrence of primary site tumors. A veterinary pathologist can give the vet and cat owner a prognosis which gives the cat owner a probability of recurrence of the cancer or a metastasis of the cancer to other parts of the cat’s body.

At home, pet owners need to keep the cat from scratching, biting, licking or rubbing the tumor. If an affected area becomes ulcerated, the cat’s owner needs to keep this clean. After surgery, the cat owner should report any suture loss, swelling and bleeding to the vet.

Fibrosarcoma Questions and Advice from Veterinary Professionals

jelly
Rescue
3 Years
Mild condition
0 found helpful
Mild condition

Has Symptoms

skin bump

Medication Used

Lysine
allergy med

How do I tell if the small bumps on my cats skin are worrysome? My cat is male,fixed and turns 3 next week. He has 3 bumps on his skin, at least one has been there and the same size for at least 2 months. That one is right on the edge of the bald spot of one if his nipples. At his last vet appointment the vet tech looked at it and said not to worry about it. A couple days ago I saw he has another small bump of the same size on another nipple bald patch on the other side. Last week I found another bump near his armpit/ throat chest area. None of the bumps seem discolored, painful or itchy. They are the size of a bug bite or a human zit or maybe a cat nipple. The chest one might have gotten a little bigger but not very noticeable. He gets chin acne sometimes and has allergies which he takes meds for. He's had other bumps on his skin before but they have gone away quicker. He has no issues with eating/ drinking/ bathroom/ sleep etc. He talks in his sleep sometimes though. I've seen the bumps be pinkish but that might be from me trying to find them in his fur, they aren't always pink. He doesn't mind me fiddling with them. Or he doesn't seem to. Thank you!

Michele King
Dr. Michele King, DVM
467 Recommendations
Thank you for your email. Without seeing Jelly and looking at these lumps, I can't say whether they are anything to worry about or not - it would be best to have him examined again by your veterinarian to see how the lumps have progressed, if they are something to worry about, and if any treatment needs to be given for the lumps. Your veterinarian will be able to let you know if you need to worry. I hope that everything goes well for him!

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Moe
Street cat turned house cat
13 Years
Mild condition
0 found helpful
Mild condition

Has Symptoms

Lump on back

My loving buddy is 13.5 years old (he is a rescue cat that I've had since he was approx. 4 months old). He already had one sarcoma removed from his back (incision site) and was clear for 5 months. Unfortunately, he did not do well with the surgery. It was very hard for him coming off the anesthesia and recovery was very very tough on him. We found that there was another lump just below the surgical site. We made the very hard decision not to have further surgery as the little guy didn't so well the first time with it. Chemo/radiation is not an option where I live. We saw the vet a month ago when he first said that he believes the cancer is back. What is the average length of time we have now? He's still happy, purring and eating. He's lost a bit of weight and the tumor itself has really not increased. I know that without seeing him you cannot give a full estimation - just looking for a bit of a guess as I have a huge language barrier here as I am living in a country where I don't really speak the language.

Michele King
Dr. Michele King, DVM
467 Recommendations
Thank you for your email. I'm sorry that that is happening with your Moe. You're right, without seeing him, I have a hard time estimating the time that he has left, but if the tumor that has grown back is also a sarcoma, those tend to grow fairly quickly. It just depends on how quickly it grows, how it affects his appetite, and his quality of life. As long as he is comfortable and the tumor isn't ulcerating, bleeding or causing him pain, you don't need to rush to make any decisions. I hope that he remains comfortable for quite a while longer.

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Boo
American Shorthair
9 Years
Critical condition
0 found helpful
Critical condition

Has Symptoms

Lump

Hi, I have a 9 y/0 male short hair cat and he has a lump on his back right thigh that is not hard but feels almost like a lipoma, doesn't seem to hurt him. I was just looking if anyone else had the problem and saw that there was a cancer called fibrosarcoma. It peeked my interest because I know that my cat had just gotten his vaccines about a month before I noticed the lump, it does not seem to be growing. My vet has been putting off getting it tested but I am very concerned. He said that getting the mass removed and tested would cost around $3000 and I have no problem paying that but my vet is on vacation right now and I was wondering if I should take my cat somewhere else.

Michele King
Dr. Michele King, DVM
467 Recommendations
Thank you for your email. I'm not sure how long your veterinarian is on vacation for, but if it is for an extended time and you do feel that the mass is getting bigger, it would be better to be seen sooner. If your veterinarian will be back within the next week or two, and the mass isn't growing, and Boo seems to be acting normally, you should be fine to have him seen when your veterinarian is back from vacation. Testing will give you a better idea as to whether he mass is a fibrosarcoma or otherwise.

I had a dog that had a lipoma and when I found a lump on my cat's outside thigh area, I was hoping that it was also a lipoma. It turned out to be fibrosarcoma after surgery for a biopsy.

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Chelsea
DOMESTIC
15 Years
Mild condition
0 found helpful
Mild condition

Has Symptoms

tumor

My cat had her leg amputated 3 months due to a tumor that was deep in her muscle, her entire leg to her hip was removed. It was later discovered that she had fibrosarcoma. She's getting along great on three legs however the tumor has returned near the site of the amputation, we just tested it and it is fibrosarcoma. It grown in size very quickly over the last month. My question is, should we try to have the new tumor removed again or should we just wait for the cancer to spread and let nature takes it's course. She is 15 years old but extremely playful and active. I'm devastated that the cancer returned so quickly after what she just went through with the amputation.

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations
Aggressive amputation of a limb can be beneficial in these cases as it allows a good wide margin which is important in these cases; however, if the has been a recurrence of at the site of amputation it may not be possible to successfully get a good margin of healthy tissue to make a successful removal of the fibrosarcoma. Each case is different and should be treated as such, you should discuss your options with your Veterinarian but I would be hesitant to do another surgery given the circumstances and Chelsea’s age. Regards Dr Callum Turner DVM

Thank you for the advice Dr. Turner. We actually had good margins but were also told after surgery that fibrosarcoma is so aggressive that the would cancer would likely return within months. I was hoping we had alternate options but am not surprised that we don't. Our goal is to make Chelsea's life wonderful each and every day she is with us.

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Bella
Maine Coon
12 Years
Fair condition
0 found helpful
Fair condition

Has Symptoms

none

I just wrote but wasn't able to submit. My female cat has a lump on her right side under the ribs. It was biopsied. Vet thinks it's mucoid
Sarcoma. While doing the biopsy she
Cut it open and a mucus like substance
ran out. Lump 5 cm in diameter. Vet says removing it would require extensive restorative surgery. Blood work drawn also. Waiting for the results now. Vet pretty positive about diagnosis even without results.
Waiting for results before deciding on treatment. Bella is a well loved family member. What would you do in this situation?

Michele King
Dr. Michele King, DVM
467 Recommendations
Thank you for email. I'm sorry that this is happening to Bella. Without examining her or knowing more about her situation and her lab results , I have a hard time commenting on whether the surgery would be a good idea for her. It would be best, I think, to wait until you get the lab results and discuss the details of the actual surgery and recovery with your veteirnarian. If you arent sure at that point, it never hurts to get a second opinion and weight your options.

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Sam
tabby
16 Years
Critical condition
0 found helpful
Critical condition

Has Symptoms

Lump

My Cat Sam has a Fibrosarcoma on his from left leg, it’s smaller than a golf ball but still pretty large. It grew so fast! And now his little paw is so swollen from it because the circulation is being affected. The vet said his entire leg needs to be removed and not just the tumor! He’s almost 17, has the beginning stage of kidney failure but is otherwise so playful and happy! I don’t know that amputating his entire leg is the right decision. Is it possible another cancer specializing vet could remove the tumor? Is it possible to remove pieces of the tumor to increase blood flow? Please any andive would be so helpful I’m so sad for him

Read more at: https://wagwalking.com/cat/condition/fibrosarcoma

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations
Whilst surgical debulking is an option, it sounds like this is a rapidly growing tumour and would need to be removed; the problem with the leg is that we rarely have enough skin to get adequate margins so the treatment of choice would be amputation. To be honest, most animals adapt to amputation well and it is usually the owner who has the biggest issue from a cosmetic or other point of view. I would amputate the leg, but you are free to visit another Veterinarian for another opinion. Regards Dr Callum Turner DVM

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O’Malley
dsh
5 Years
Mild condition
0 found helpful
Mild condition

Has Symptoms

Flat,round lump on surface of skin.

We live in a region where our cats has to have vaccinations annually. For the past two years our cat has reacted with a lump, which we have then had biopsied each time and thankfully not fibrosarcoma. This year it has happened again. Is it safe to assume it is not likely fibrosarcoma or should we get it checked each time it happens? (Previously it was under the skin, this time it’s on the surface.)

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations
In these cases I always stay on the side of caution (especially if the presentation is different) as the one time you don’t check it, it may just be serious and as a result of complacency treatment would be delayed. Most likely the result would come back the same but as I said, the one time you don’t check... Regards Dr Callum Turner DVM

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Teddie
Persian
12 Years
Critical condition
0 found helpful
Critical condition

Has Symptoms

Lethargy

My cat has just been diagnosed with fibrosarcoma and will start radiation treatment tomorrow .. she is 12 and it is inoperable because there is not much tissue around the growth.. it is on her right cheek and extends into her mouth., it has swollen up and looks like it is infected.,, is this normal ? Should we proceed with the radiation ?

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations
Before Teddie receives radiation, he will be evaluated beforehand; if he is found not to be physically fit or suitable for radiation they will not go through with it. Without examining Teddie I cannot tell you whether or not you should go. Regards Dr Callum Turner DVM

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Mila
American Shorthair
2 Years
Moderate condition
1 found helpful
Moderate condition

I just had a mass removed off my cats back leg. The mass was fairly big (cherry tomato size or a bit smaller) I only noticed it a month ago and took her in. They biopsied it and it came back fibrosarcoma. I’m still a little shaken and don’t understand it fully, but the vet is saying we need to move fast as this is a very aggressive form of cancer. She gave me options of chemo,radiation, or altogether amputating the leg. I’m not sure if I should take any of these actions seeing as we removed it and my cat has no other symptoms. Did I do the right thing removing it, should I go on with the treatment options.

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations
Fibrosarcoma is locally infiltrative but is slow to metastasise, it is important that any fibrosarcoma tumour is removed with wide margins of healthy tissue and is followed up with radiotherapy or chemotherapy as recurrence rate at the surgery site is high. Whilst amputation is a radical excision method, it is quite effective in these types of cases; I would recommend the tumour removal (already done) along with radiotherapy or chemotherapy. Regards Dr Callum Turner DVM

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Pooky
Persian mix
13 Years
Moderate condition
1 found helpful
Moderate condition

My little buddy started off with an eye infection and while being treated he had a lump under the eye. The Doctor diagnosed it as an abscess and he removed 4 teeth. The swelling never went down and he had surgery to remove it and got a biopsy. It is still swollen and above his eye is swelling fairly fast. We got the results today and it is a fibrosarcoma. All this was in the matter of a couple months. I'm on Social Security but if it would help him I would borrow money for more treatment for him. He is not eating or drinking now. Any ideas on how much longer he has or what i can do now. Thank you for any help.

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations
Honestly, I cannot say whether it would help or not but I would be on the more guarded side of prognosis; there are many factors involved when determining prognosis including extent of spread, invasiveness, Pooky’s general health among other factors. Fibrosarcomas rarely metastasise but have a higher recurrence rate and are locally invasive; this should be considered before any surgery is done. Regards Dr Callum Turner DVM

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Vlooi
Main Coon
1 year and 2 months
Moderate condition
0 found helpful
Moderate condition

Hey there, Jolandie here.

My cat was diagnosed with gingivitis, and he got a Colvisone and Depo-Medrol injection.
Literally that same night, I felt a tiny lump against (Stuck) to is spine, or shall I say muscle. not sure, its definitely attached. just not sure to what, however it is close to the lower lumbar region on the left side. (IT'S NOT AT THE INJECTION SITE WHERE THIS BUMP APPEARED)

It is now almost 2 weeks later and it has grown to the size of say a cherry tomato/olive.

He does not seem to have any pain there (he sometimes jumps but im not sure if its because its painful), but I have noticed a change in his attitude lately. He also seems a tiny bit reluctant to move, besides for when it comes to food (he will run up and down following me and meowing for it).

Any idea what this could be?

He is going to the vet on friday. I am a very worried Cat mommy.

Hope someone can help.

Thank you

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations
Without examining Vlooi I cannot say what the cause is, an examination and possibly a fine needle aspirate will give a good idea of what the cause is; the growth rate of the mass is concerning. Many fast growing masses are associated to the skin, but you have described a mass attached to the spine or muscle in the lumbar spine; I do not want to jump to any conclusions as I haven’t examined Vlooi so it would be best to wait for your Veterinarian to examine him. Regards Dr Callum Turner DVM

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Mox
Maine Coon
13 Years
Serious condition
0 found helpful
Serious condition

Has Symptoms

no other symptoms - fully normal habits, mobility

We are waiting on a diagnosis from our vet but is seems likely my 13 yr old male cat has fibrosarcoma. We have no idea how long it has been there - it is not a normal area that is pet out touched or seen. It is a hard, elongated large mass on the upper rear of a back leg. The vet said that amputation could be a likely requirement. We are not wanting to do that, or treat with chemo etc. So the question...if we wait and see how this goes, and it eventually breaks through the skin, can surgery be used to remove a majority of the mass and re-seal the skin to give him more time, or oncee it breaks through the skin you can't do much? Or, if that is our plan, would a surgery to reduce the size earlier be better? We will be able to talk to our vet next week in more detail, but I ran across this site and thought I would see if you could advise.

Callum Turner
Dr. Callum Turner, DVM
1955 Recommendations

I would recommend operating (if you want to operate at all) now rather than later as the size would be more manageable and if the skin becomes involved you may end up with a wound with no excess skin to close up. Waiting it out isn’t really an option and it is better to address the problem now than a larger problem later on. Obviously each case is different and your Veterinarian will give you options about Mox’s specific case. Regards Dr Callum Turner DVM

My cat was diagnosed with a fibrosarcoma about 6 months ago. It was surgically removed, but now it seems she has another 2 masses the same size as the previous fibrosarcoma on the same side as the previous one, along with that she has a mass of tiny lumps right down her spine, guessing that they too are fibroscarcoma's. I do not wish to put her through either chemo or radiation treatments. How long does this awful condition last before it claims lives?

My 4 year old cat has advanced fibrosarcoma on his left hip. He is a large cat and moves around well. However, he's recently started breathing heavy because of stress or pain. The tumor hasn't broken through the skin. He is a medium hair length cat and the tumor is somewhat hidden besides for the obvious asymmetry. His vet put him on gabapentin and he is resting and breathing at a normal rate now. I dread what comes next.

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Boyd
Domestic Short Hair
7 Years
Serious
Has Symptoms
No Other Symptoms - Fully Normal Habits, Mobility
Lump
We have a male rescue cat about 7yrs old who had a small mass removed not even 1yr ago that came back soft tissue sarcoma.They removed a good size of what appeared to be healthy tissue all around the mass in an attempt to be sure they had it all.We were told the tumor appeared to be self-contained w/no sign of spreading in the surrounding tissue that was removed,but this type tends to return so to feel him often to check for signs of lumps.He is a very affectionate cat,who loves to cuddle,be petted,&sleep next to me or between my husband&me.He is petted/checked regularly by by 3 children and 2 adults.He was just seen in our vet's office in late May for an annual check&vaccinations,&we were told no lumps were noticed anywhere by the vet, either. Now 2 days ago,while snuggling with Boyd in the AM,who had climbed into bed next to me as usual,suddenly I noticed a lg swollen area/mass,far different than the feel of the small lump that was removed,but on the same side.This is huge compared to the one removed last fall,but he acts his normal,like last time.Our vet office does not have a vet in again until Mon,so we took Boyd to another town to a vet who use to work in our vet office.We just got him in to be checked today&were told it is another tumor.How could none of us have notice this huge lump forming prior to 2 days ago when he's being petted daily by numerous family members? We were told that it will need to be surgically removed like the last one; however, it is so big that a lot more skin will need to be removed&good skin removed elsewhere in order to close up the spot. It is positioned near the top of the right front leg, this time on the side closer to the neck&going up by the shoulder blade. If it is this big this fast, hasn't it probably already spread? I'm torn as to how to proceed as he's like one of my kids.Do we have it removed again or is it time to put him down so he doesn't end up suffering? Any advice? Thank you!
Monte
Cat
9 Years
Moderate
Has Symptoms
Constipation
My 9 year old male neutered cat has had a fibrosarcoma of the (l) anal gland for a year now. His surgeon with 42 years experience has said that it is the first time her has seen a fibrosarcoma in that place. Monte's main problem at this point is defecating, as he has no motility after a series of de-obstipating He has seen 3 surgeons and is now being managed by a regular DVM who has me giving him enemas every 3 days and Colon 3 daily, which appears to be giving him quality of life. When discovered, Monte was not a candidate for surgery and I went with the surgeons option of a tumor related vaccine and the tumor appears to be shrinking.