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Tumores y cáncer

Fibrosarcoma

A malignant tumour of the connective tissue. In cats, one particular form is associated with the site where injections or vaccines are given (feline injection-site sarcoma).

Severe🐈 Cats🐕 Dogs

Symptoms to watch for

  • • A firm lump under the skin that grows
  • • In cats: a lump at a site where an injection or vaccine was given
  • • The lump may grow quickly and become attached to the tissues
  • • In advanced stages: ulceration

Causes

A malignant tumour with a multifactorial cause. In cats, one variant is linked to the inflammatory reaction at an injection site.

Diagnosis

Biopsy to confirm. Imaging to assess the local extent, as it tends to infiltrate.

Treatment

Surgery with very wide margins (it tends to recur if not completely removed), sometimes combined with radiotherapy. Early detection greatly improves the prognosis.

Prevention

In cats, a practical rule: watch any lump at an injection site that grows, lasts more than 3 months or exceeds 2 cm — seek advice promptly.

When should you see the vet?

See your vet if a firm, growing lump appears under the skin, especially in a cat and at an injection site.

Consult a vet

WetAi guides you and takes you to the vet; it does not diagnose.

Notice: this information is for general guidance and educational purposes only. It does NOT replace diagnosis or treatment by a registered veterinary surgeon. If you notice any symptoms, always consult a professional. Wallapets accepts no responsibility for the use of this information without veterinary supervision.

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