A progressive autoimmune inflammatory thyroiditis; the most common cause of hypothyroidism; increased risk for thyroid malignancy is which?

A progressive autoimmune inflammatory thyroiditis; the most common cause of hypothyroidism; increased risk for thyroid malignancy is which?

• A. Hashimoto's thyroiditis
• B. Graves disease
• C. De Quervain thyroiditis
• D. Goiter

Answer: (A)

Autoimmune destruction of the thyroid that progressively reduces function is Hashimoto’s thyroiditis. This condition is the most common cause of hypothyroidism in areas with adequate iodine because the immune system slowly damages thyroid tissue, leading to loss of hormone production as lymphocytes infiltrate and destroy follicles. A notable point is that long-standing inflammation and lymphoid activity inside the gland raise the risk of developing thyroid malignancy, particularly primary thyroid lymphoma, though the overall cancer risk remains relatively modest. By contrast, Graves disease drives hyperthyroidism through stimulating antibodies, De Quervain thyroiditis is a typically painful, often self-limited inflammatory process, and goiter simply refers to enlarged thyroid tissue from various causes without the same autoimmune destruction or malignancy association.

Autoimmune destruction of the thyroid that progressively reduces function is Hashimoto’s thyroiditis. This condition is the most common cause of hypothyroidism in areas with adequate iodine because the immune system slowly damages thyroid tissue, leading to loss of hormone production as lymphocytes infiltrate and destroy follicles. A notable point is that long-standing inflammation and lymphoid activity inside the gland raise the risk of developing thyroid malignancy, particularly primary thyroid lymphoma, though the overall cancer risk remains relatively modest. By contrast, Graves disease drives hyperthyroidism through stimulating antibodies, De Quervain thyroiditis is a typically painful, often self-limited inflammatory process, and goiter simply refers to enlarged thyroid tissue from various causes without the same autoimmune destruction or malignancy association.