What is the treatment of choice?

A 47-year-old woman is investigated for thyrotoxicosis. On examination she is noted to have a goitre containing multiple irregular nodules. Nuclear scintigraphy with technetium 99m reveals patchy uptake.
What is the treatment of choice?

1.Corticosteroids
2.Radioiodine
3.Block and replace regime
4.Surgery
5.Anti thyroid drug titration regime

Explanation:

Toxic multinodular goitre describes a thyroid gland that contains a number of autonomously functioning thyroid nodules that secrete excess thyroid hormones

Nuclear scintigraphy reveals patchy uptake

The treatment of choice is radioiodine therapy