“…4,5 Thyroid gland disorder is among the most common endocrine disorder and occurs globally with an incidence of geographical variation and histopathological pattern related to age, sex, nutrition and environment-related factors. 1,5,6 Various causes of goiter include defects in thyroid hormone synthesis, iodine deficiency, autoimmune disease, and nodular diseases. Endemic goiter is thought to be caused by TSH stimulation resulting from inadequate thyroid hormone and other paracrine growth factor synthesis.…”