Spindle Cell Sarcoma In Cats

Basically, the body cells produce newer cells (through mitosis), while those cells that are old die and those that are excessively damaged undergo apoptosis (suicide). This happens harmoniously which is why the body of an organism is proportion.

However, if a single cell transforms into a cancer cell, the harmony of the cell’s life starts to be disrupted. This is the reason why you can notice swellings or tumors in cancer patients.

Feline Sarcoma

Soft tissue sarcoma is known to be a cancer of the soft and connective tissues. It is also known as feline sarcoma and they can either be benign or malignant. Since connective tissue is widely distributed in the body, this tumor can originate anywhere in the body of a cat. However, the most common sites are the subcutaneous tissue and the skin.

Kinds of Sarcoma Found in Cats

There are various types of sarcoma that can be found in the cats. These are the spindle cell sarcoma, fibrosarcoma, hemangiopericytomas and liposarcoma.

What is Spindle Cell Sarcoma in Cats?

Spindle cell sarcoma is also found in humans and as well as other creatures. But, what is spindle cell sarcoma in cats?  Actually, there is not much difference. The only difference is the name just to specify the organism which suffers the disease.

Spindle cell sarcoma arises from nerve cells, fat-producing cells or smooth muscle cells. Some researchers suggest that they are in between malignant and benign tumors. Why? It is because the said cancer rarely metastasize (migrate to other sites through the bloodstream), but they do invade adjacent structures.

Increase Cases of Feline Sarcomas

In the year 1991, veterinarians observed that there is an increase in the number of cats having feline sarcomas. They have noticed that the puncture sites of vaccines are the usual location of the sarcoma. That is why they associated the vaccine deposition to sarcoma formation and it is termed as VAS or vaccine associated sarcomas.

The most common cause of VAS is the FeLV vaccine and as well as the rabies vaccine. They are usually injected intramuscularly and subcutaneously, and both may result to sarcoma.

But take note, even though there are increased cases of feline sarcomas, always remember that these are still rare types of cancers and found only in 1 to 1,000 cats.

Signs and Symptoms

Now that you know what is spindle cell sarcoma in cats, it is time to become familiar with its signs and symptoms. Since the most common cause of spindle cell sarcoma is vaccination, you must observe the puncture site of the vaccine in your cat.

Normally, a lump may remain at the vaccination site for a month. If it stays there for 2 to 3 months, diagnosing it immediately is important. Also monitor the size of the lump if it grew larger from the day of the vaccination.


Treatment is usually surgical removal of the tumor and followed by chemotherapy and radiation therapy to kill cancer cells that are left.

Why Give Vaccines for your Cats?

Although vaccines in cats may cause them to have sarcomas, it is still important to give them protection from viruses. If your cat doesn’t have any kind of vaccines, it may have rabies or other kinds of diseases. What is riskier is that pet owners will also need to worry about their health because their cat might be infected with a certain contagious disease and may be passed to them or to other pets they have in the house.