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1. Question
All of the following conditions are causes of hyperthyroidism except.
Correct
Answer & Explanation:
The answer is B
Explanation:
Hashimoto thyroiditis (chronic lymphocytic thyroiditis) is a cause of hypothyroidism. Th e incidence of Hashimoto thyroiditis is 1% to 2%, and it increases with age. It is more common in women than in men and more common in whites than in blacks. Th ere may be a familial tendency. Patients with Hashimoto thyroiditis have elevated titers of antibodies to thyroglobulin: A titer 1:32 is seen in 85% of patients. Two variants of Hashimoto thyroiditis have been described: gland fi brosis and idiopathic thyroid atrophy, which is most likely an extension of Hashimoto thyroiditis.
Incorrect
Answer & Explanation:
The answer is B
Explanation:
Hashimoto thyroiditis (chronic lymphocytic thyroiditis) is a cause of hypothyroidism. Th e incidence of Hashimoto thyroiditis is 1% to 2%, and it increases with age. It is more common in women than in men and more common in whites than in blacks. Th ere may be a familial tendency. Patients with Hashimoto thyroiditis have elevated titers of antibodies to thyroglobulin: A titer 1:32 is seen in 85% of patients. Two variants of Hashimoto thyroiditis have been described: gland fi brosis and idiopathic thyroid atrophy, which is most likely an extension of Hashimoto thyroiditis.
Causes
Hashimoto thyroiditis, a chronic lymphocytic thyroiditis that is considered to be an autoimmune disorder
Treatment of hyperthyroidism, such as radioactive iodine therapy, subtotal thyroidectomy, or administration of antithyroid agents
Surgical excision of thyroid gland
Goiter (enlargement of the thyroid gland)
Endemic goiter results from inadequate intake of dietary iodine. Th is is common in regions with iodine-depleted soil and in areas of endemic malnutrition.
