How common is injection site sarcoma in cats?

Injection-site sarcomas are considered to be a rare development. Reports indicate that they occur at a rate of about 1 case per 10,000 to 30,000 vaccinations.

Can an injection cause a lump in a cat?

Tumors can develop anywhere from 4 weeks to 10 years or more after receiving a vaccine. Cats will commonly develop a lump at the site of a vaccination, typically caused by inflammation and local immune stimulation. These lumps are typically benign and will resolve spontaneously a few weeks after they are noticed.

Is it normal to have a lump after an injection?

Nodules can occur following any vaccine. They usually present in the days or weeks following immunisation and are most often reported following vaccines given in infancy or childhood. A nodule can persist for weeks and sometimes months. They are usually asymptomatic but can be tender and/or itchy.

What are injection site sarcomas ( ISS ) in cats?

Injection-Site Sarcomas in Cats. Injection-site sarcomas (ISS) are also referred to as fibrosarcomas. They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines.

What kind of tumor does a cat have?

They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines.

What kind of tumor is an injection site sarcoma?

Injection-site sarcomas (ISS) are also referred to as fibrosarcomas. They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines.

Where does a mesenchymal tumor develop in a cat?

They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines. Common locations include the interscapular (between the shoulder blades) region, the flank region, and the rear legs.

Injection-Site Sarcomas in Cats. Injection-site sarcomas (ISS) are also referred to as fibrosarcomas. They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines.

They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines.

Injection-site sarcomas (ISS) are also referred to as fibrosarcomas. They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines.

They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines. Common locations include the interscapular (between the shoulder blades) region, the flank region, and the rear legs.

How common is injection-site sarcoma in cats?

Injection-site sarcomas are considered to be a rare development. Reports indicate that they occur at a rate of about 1 case per 10,000 to 30,000 vaccinations.

What’s the prognosis for a feline sarcoma tumor?

Prognosis of Feline Sarcoma. Cats in general respond favorably to chemotherapy. If the tumor can be completely removed, the cat’s chance of survival is much higher. If the cancer is very aggressive in nature and has spread to other parts of the body, the sarcoma may prove fatal.

Why are soft tissue sarcomas common in cats and dogs?

Soft tissue sarcomas or STSs are a group of cancers that arise from skin and subcutaneous tissues. Anatomically, these tumors arise from mesenchymal cells, the precursors of bone, cartilage, and other connective tissues. Common STSs in cats and dogs are: Soft tissue sarcomas are grouped together because they biologically act similarly.

How are injection site sarcomas diagnosed in cats?

However, other chronic injections such as lufeneron (Program) also have been thought to cause these tumors. It is likely there is a genetic predisposition to the development of these tumors in certain cats; however, the exact genetic problem has not yet been identified. How is it diagnosed?

What kind of tumor does a cat have?

An injection-site sarcoma is a tumor of the connective tissues in the cat. The most common cell type affected is the fibroblast, giving the tumor the name fibrosarcoma.

What to do if your cat has sarcoma?

A biopsy of the lump and histopathology (microscopic examination) of the abnormal tissue will confirm that it is a sarcoma as opposed to inflammation or infection. What is the treatment? “A generous amount of tissue around the margins of the tumor must be removed to reduce likelihood of recurrence.”

An injection-site sarcoma is a tumor of the connective tissues in the cat. The most common cell type affected is the fibroblast, giving the tumor the name fibrosarcoma.

What are injection site sarcomas ( ISS ) in cats?

Injection-Site Sarcomas in Cats. Injection-site sarcomas (ISS) are also referred to as fibrosarcomas. They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines.

Where does a mesenchymal tumor develop in a cat?

They are mesenchymal tumors that are locally invasive and have a low to moderate chance of spreading to other sites (metastases). These tumors develop in areas where cats have received injections, mainly vaccines. Common locations include the interscapular (between the shoulder blades) region, the flank region, and the rear legs.