Hypothyroidism is a condition in which the thyroid gland does not produce enough thyroid hormones to perform its function properly. Whereas hyperthyroidism is found when your body produces too much thyroid hormones, thyroxine (T4) and triiodothyronine (T3), and becomes overactive.

Hashimoto's thyroiditis is a condition of extensive lymphocytic infiltration, thyroid fibrosis, thyroid cell atrophy, and the presence of many strong eosinophils. There are many causes of thyroiditis.

Nodular goiter usually refers to an abnormal growth of thyroid cells forming a mass. Understanding well about the thyroid nodules tirads 3 and thyroid nodules 2 lobes tirads 3 will help the treatment become more effective for the patient.