Treatment of hyperthyroidism with radioactive iodine

Area of Science:

• Endocrinology
• Nuclear Medicine
• Thyroidology

Background:

• Radioactive iodine (RAI) therapy has been a cornerstone in hyperthyroidism management for over 50 years.
• Its efficacy and safety are well-established, but optimal utilization requires careful patient selection and preparation.

Purpose of the Study:

• To review the efficacy, safety, and optimal use of RAI therapy for hyperthyroidism.
• To address uncertainties regarding 131I dosing and the balance between cure rates and hypothyroidism incidence.

Main Methods:

• Review of long-term follow-up studies on RAI treatment for hyperthyroidism.
• Analysis of clinical judgment and patient selection criteria for RAI therapy.
• Discussion of early and late adverse consequences of RAI treatment.

Main Results:

• RAI therapy demonstrates significant efficacy and safety in treating hyperthyroidism.
• Early side effects are minimal and manageable; late adverse effects remain largely conjectural.
• A trade-off exists between achieving a definitive cure and the risk of post-therapy hypothyroidism, with dosing being a key area of debate.

Conclusions:

• RAI treatment is considered an excellent option for the majority of hyperthyroid patients.
• Long-term monitoring and potential lifelong levothyroxine (L-T4) treatment are necessary for most patients post-RAI therapy.