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Is it common for cats to develop a lump at the injection?

Is it common for cats to develop a lump at the injection?

It is common to find a lump at the sight of injection in cats when using Depo-medrol. Not all cats get them and they do not get them from every injection that is given but they can occur. We really only get concerned if they last for longer than a couple of weeks or become extremely sore or painful.

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.

Can a cat get a lump from Depo Medrol?

It is common to find a lump at the sight of injection in cats when using Depo-medrol. Not all cats get them and they do not get them from every injection that is given but they can occur.

What does it mean if your cat has a lump under its skin?

A far more serious side effect is a vaccine-associated sarcoma (VAS), which is a rare but aggressive type of cancer of the connective and soft tissues. It is most often associated with rabies and feline leukemia vaccines. The incidence is between 1 – 1,000 to 1 – 10,000 cats. What should you do if you notice a lump under a cat’s skin?

Where do injection site sarcomas develop in cats?

Injection-Site Sarcomas in Cats. 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,…

It is common to find a lump at the sight of injection in cats when using Depo-medrol. Not all cats get them and they do not get them from every injection that is given but they can occur. We really only get concerned if they last for longer than a couple of weeks or become extremely sore or painful.

It is common to find a lump at the sight of injection in cats when using Depo-medrol. Not all cats get them and they do not get them from every injection that is given but they can occur.

How to tell if your cat has vaccine-associated sarcoma?

Vaccine-associated Sarcoma in Cats 1 Symptoms and Types. Lesions occur at the site of the vaccination, persisting and/or growing in size. 2 Causes. Vaccination with FeLV or rabies vaccine appears the be the underlying cause of this type of sarcoma. 3 Diagnosis.