CANCER IN YOUR CAT

POSSIBLE OPTIONS

Cancer is the uncontrolled growth of abnormal cells and the speed of progress and severity of symptoms depends on the type of abnormal tissue cell affected. As many as one in five cats are likely to develop one of the many different forms of cancer at some stage of their lives. The risk increases with age and so, with cats now enjoying a longer life expectancy through improved veterinary care, the number of animals with cancer has been increasing in recent years.
 

What causes cancer?

As with human cancers, the causes of cancer in cats and the processes which occur in the disease are still not well understood. Possible causes include:

  • toxic chemicals or exposure to harmful radiation.

  • feline leukaemia virus (a very common cause in cats).

  • abnormalities in the immune system which usually protects against infectious diseases.

  • abnormal genes.
     

How do I know my cat has cancer?

The symptoms of cancer are very variable and depend on the type of abnormal tissue cells involved, the site of the cancer and the stage of the disease. Advanced cases often show weight loss and appetite suppression. Your cat may be depressed, vomit, have diarrhoea or constipation, or fever. Your cat may also get tired easily because of anaemia.
 

Is my cat at risk of developing cancer?

Cancer can occur in any animal at any age but certain types of cat are more susceptible to particular forms of cancer. Cats with white fur and skin which like to sunbathe are vulnerable to skin cancers especially on the ears, nose, lips and any other areas where the skin is exposed to direct sunlight. The risk of cancer developing may be reduced by applying sunscreen to white exposed areas on sunny days. Feline leukaemia virus is the most common cause of cancer in the cat, although not all cats exposed to the virus will develop the disease. Most cats are able to resist the virus but those that cannot will develop permanent infection and three out of 10 of these will get some form of cancer.
 

Can cancer be treated?

Yes but this depends on the type of abnormal tissue cell involved and the stage of the disease. Sometimes euthanasia is the only humane alternative to a slow and painful death. In other cases treatment can produce a complete cure or at least significantly increase the length, or improve the quality of your cat's life. There are three basis options for treating cancers, not all are appropriate for every case and sometimes a combination of treatments has the best chance of success.

These are:

  • Surgical removal: usually the best choice for most cancers affecting solid tissue. If the cancer is relatively benign or if a more malignant cancer has not yet spread to other parts of the body, surgical removal may often produce very good results.

  • Chemotherapy (drug treatment): the best option for the cancers that affect the blood or multiple areas of the body. It may also prevent or delay the appearance of secondary tumours in other organs after surgical removal of the original lump.

  • Radiotherapy (x-rays): often effective when tests have shown clearly the extent and size of the tumour. The radiation may be given from an outside source or radioactive material may be injected into the body. A beam of radiation is most effective on cancers of the extremities such as the limbs and head where it is less likely to damage normal tissue before reaching the tumour. Radiotherapy units are only located in a few specialised centres and your vet would need to refer you to a cancer specialist for this form of treatment.
     

Will my cat be in pain?

Growths are not usually painful initially. Discomfort can be severe when the cancer is advanced, but most cancer-related pain can be controlled. Your vet will probably try a gentle painkiller at first and move on to more powerful drugs if this proves ineffective. Your vet will try to improve your cat's quality of life rather than prolonging the life of your cat if it is suffering.

 

Is diet important?

Careful attention to your cat's diet may improve its quality of life. Cats need extra food to cope with the effects of a fast growing tumour but many cats will have a poor appetite and this will accelerate the weight loss. Warming the food or feeding by hand may help stimulate your cat's appetite. There are also special diets which provide good nutrition even if your cat's appetite is poor.

 

How long will my cat live?

This is the question that every owner wants answered but as with human cancer it is impossible for your vet to give you an answer with any confidence. The survival chances will depend not only on the type and stage of the disease but also on your cat's general state of health. You should discuss this issue with your own vet so that you can agree between you an appropriate treatment plan for your cat. It is understandable that, faced with a diagnosis of cancer, you will feel frightened about the future for your pet - discussing your fears with your vet is the very best way to obtain reassurance and an independent assessment that you are doing what is right for your pet.

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Cooks Hill Veterinary Clinic   T: 02 4925 2999    F: 02 4927 5565    info@cookshillvet.com.au   292 Darby Street, Cooks Hill, NSW 2300