This is toxic condition Thyroid Factor Review because increased levels of thyroid hormones in the bloodstream create trouble in the metabolism in the body. Toxic multi-nodular goiter generally occurs in people with advanced age and who may have had hypothyroidism some time in their life. Those nodules produce excessive thyroid hormones after a person is exposed to excess iodine in iodine contrast dyes and various radio imagining tests.
Another similar condition known as toxic adenoma is a case wherein the patient develops one solitary nodule or multiple nodules and one of them is significantly larger as compared to others.