Radioactive Iodine Therapy
Hyperthyroidism is the most common hormonal disorder
affecting older cats.Radioactive iodine therapy is a safe, effective
treatment option for cats with hyperthyroidism.
The therapy is a safe and highly effective alternative to
surgery or medication. The injection is similar to a vaccination; the
radioactive iodine is taken up into the thyroid gland where it destroys
hyper-functioning tissue with no risk to healthy tissue.
Hyperthyroidism is caused by an overactive thyroid gland
resulting in excess production of thyroid hormones responsible for regulating
metabolism, body temperature, blood pressure, heart rate and gastrointestinal
function.
In most cases, the abnormality is linked to a benign growth
on the thyroid gland; only about three per cent of hyperthyroid cats have a
cancerous thyroid tumour.
Symptoms include: weight loss; increased appetite and
drinking; increased urination; increased activity levels, restlessness or
nervousness; vomiting; increased vocalization, and an unkempt coat. Left untreated, hyperthyroidism can lead to
heart disease and high blood pressure that can cause further damage to the
eyes, kidneys and brain.
OVC is happy to be able to offer radioiodine therapy for the treatment of hyperthyroid
cats.The
radioiodine therapy service is located in new state-of-the-art facilities
located in the OVC's Mona Campbell Centre for Animal Cancer.
If you suspect that your cat has hyperthyroidism, contact
your family veterinarian for an initial assessment. Your veterinarian can
contact OVC to help determine if radioactive iodine is the best treatment
choice for your cat and arrange a referral.
Hyperthyroidism in Cats Client Handout
Radioactive Iodine Treatment Information for Referring Veterinarians
