Radio-iodine treatment of hyperthyroid cats

Authors: Dillon EA, Cayzer J, Jones BR, Smidt KP
Publication: New Zealand Veterinary Journal, Volume 39, Issue 2, pp 71-74, Jun 1991
Publisher: Taylor and Francis

Animal type: Cat, Companion animal
Subject Terms: Diagnostic procedures, Endocrine/autocrine/paracrine, Thyroid, Disease/defect, Trace elements, Metabolic disease, Imaging, Treatment/therapy
Article class: Clinical Communication

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Abstract: Thirty-two elderly domestic shdrthaired cats (mean age 12.9 years) were treated with radioiodine (¹³¹I). The dose of ¹³¹I administered ranged from 39 mBq to 134 mBq. Twenty-eight cats became euthyroid after treatment, one became hypothyroid and three remained hyperthyroxaemic. Two of the hyperthyroxaemic cats were successfully re-treated with ¹³¹I. Five cats died from concurrent diseases within one year of treatment. The administration of a dose of ¹³¹I  selected by assessing the severity of the clinical signs, the size of the thyroid gland(s) and the serum level of thyroxine was an effective treatment for hyperthyroidism.

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