Question at position 61 Hyperthyroidism can be caused by all of the following EXCEPT:A pituitary gland tumor releasing excess TSH.A diet rich in iodine.Tumors producing excess thyroid hormone.Autoantibodies stimulating the thyroid gland.Excessive production T3/T4.

Question

BlackTom AI · Accepted Answer

Question: Hyperthyroidism can be caused by all of the following EXCEPT: options: 1) A pituitary gland tumor releasing excess TSH. 2) A diet rich in iodine. 3) Tumors producing excess thyroid hormone. 4) Autoantibodies stimulating the thyroid gland. 5) Excessive production T3/T4.

Option 1: A pituitary gland tumor releasing excess TSH. This is a classic cause of secondary hyperthyroidism, since excess TSH stimulates the thyroid to produce more T3 and T4. Therefore, this option describes a valid cause and is not the exception.

Option 2: A diet rich in iodine. Although iodine excess can influence thyroid function, it is not typically listed as a direct, primary cause of hyperthyroidism in the same way as Graves disease, toxic nodules, or TSH-secreting pituitary tumors. In many contexts, iodine excess is more associated with precipitating hyperthyroidism in susceptible individuals rather than being a primary, standalone cause across the board. This makes it the best candidate for the EXCEPT among the options provided.

Option 3: Tumors producing excess thyroid hormone. Autonomous thyroid tumors (toxic adenoma or toxic multinodular goiter) secrete thyroid hormone independent of TSH and are well-established causes of hyperthyroidism. This option is a correct cause.

Option 4: Autoantibodies stimulating the thyroid gland. Autoimmune stimulation, such as in Graves disease, leads to increased thyroid hormone production and is a well-known cause of hyperthyroidism. This option is a correct cause.

Option 5: Excessive production T3/T4. Direct overproduction of thyroid hormones (T3 and T4) by the gland is the defining mechanism of hyperthyroidism, so this is clearly a correct cause.

In summary, while iodine excess can influence thyroid activity in certain individuals, it is not typically considered a direct, universal cause of hyperthyroidism in the same way as the other options. This makes option 2 the EXCEPT in the context of the question.

Question at position 61 Hyperthyroidism can be caused by all of the following EXCEPT:A pituitary gland tumor releasing excess TSH.A diet rich in iodine.Tumors producing excess thyroid hormone.Autoantibodies stimulating the thyroid gland.Excessive production T3/T4.

View Explanation

Log in for full answers

Similar Questions

What is an enlargement of the thyroid that may be caused by lack of iodine, inflammation induced by an infection, tumors, hyperthyroidism or hypothyroidism?

位置6的问题 _ is the most frequently seen disorder of the thyroid in dogs whereas _ is more common in catsa. Hyperthyroidism; hypothyroidismb. Hypothyroidism; hyperthyroidism

Question at position 1 A patient is complaining of mental and physical sluggishness and low blood pressure, this is a sign of:hypothyroidismhyperparathyroidisminfectionhypoparathyroidismhyperthyroidism

The doctor suspects a diagnosis of hyperthyroidism. Which symptoms are consistent with this possible diagnosis.

A lack of iodine can lead to an enlargement of the thyroid gland. This condition is known as

In a consumer society, many adults channel creativity into buying things

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler

Question at position 61 Hyperthyroidism can be caused by all of the following EXCEPT:A pituitary gland tumor releasing excess TSH.A diet rich in iodine.Tumors producing excess thyroid hormone.Autoantibodies stimulating the thyroid gland.Excessive production T3/T4.

View Explanation

Log in for full answers

Similar Questions

What is an enlargement of the thyroid that may be caused by lack of iodine, inflammation induced by an infection, tumors, hyperthyroidism or hypothyroidism?

位置6的问题 _______________________ is the most frequently seen disorder of the thyroid in dogs whereas _______________________ is more common in catsa. Hyperthyroidism; hypothyroidismb. Hypothyroidism; hyperthyroidism

Question at position 1 A patient is complaining of mental and physical sluggishness and low blood pressure, this is a sign of:hypothyroidismhyperparathyroidisminfectionhypoparathyroidismhyperthyroidism

The doctor suspects a diagnosis of hyperthyroidism. Which symptoms are consistent with this possible diagnosis.

A lack of iodine can lead to an enlargement of the thyroid gland. This condition is known as

In a consumer society, many adults channel creativity into buying things

More Practical Tools for Students Powered by AI Study Helper

Making Your Study Simpler

位置6的问题 _ is the most frequently seen disorder of the thyroid in dogs whereas _ is more common in catsa. Hyperthyroidism; hypothyroidismb. Hypothyroidism; hyperthyroidism