Abstract #1181020: Hashimoto’s Thyroiditis and Primary Thyroid Lymphoma

Hashimoto’s thyroiditis (HT) is an autoimmune thyroid disorder discovered by Hakaru Hashimoto in 1912. The disease, which is the most common cause of hypothyroidism in adults, is characterized by a diffusely enlarged or atrophic thyroid with lymphocytic infiltration and the presence of thyroid autoantibodies. It arises from interactions between genetic, epigenetic, and environmental factors. HT has a prevalence of up to 10% in the US adult population and is more frequent among females. Primary thyroid lymphoma (PTL) is a rare cancer, accounting for less than 5% of all thyroid malignancies, and affecting mainly females.