Outcomes in hyperthyroid cats treated with radioiodine

Researchers evaluated one thousand and four hundred hyperthyroid cats treated with Radioiodine 131I.

Cats with persistent hyperthyroidism had many predictive factors that directly contrasted those of cats that developed 131I-induced hypothyroidism.

Cats that developed iatrogenic hypothyroidism were more likely to be older, female. They also were more likely to have detectable serum thyroid-stimulating hormone (TSH) concentrations, and have bilateral thyroid nodules.

In contrast, cats remaining persistently hyperthyroid were more likely to be younger, have higher severity score, and have lower 131I uptake.

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Predicting outcomes in hyperthyroid cats treated with radioiodine