Thyroid Nodule Diagnosis and Hyperthyroidism Causes

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What is the most common cause of thyrotoxicosis?

Pituitary adenoma

Thyroiditis

Exogenous thyroid hormone use

Graves' disease (correct)

What is the typical presentation in Graves' disease?

Low T4 and high TSH levels

High T4 and high TSH levels

Normal T4 and TSH levels

High T4 and low TSH levels (correct)

Which of the following is a symptom of hyperthyroidism that is NOT typically seen in patients?

Proptosis

Bradycardia (correct)

Pretibial Myxedema

Onycholysis

What is the main treatment modality for a diffuse goiter in hyperthyroidism?

Radioactive Iodine Signup and view all the answers

Which subtype of subacute thyroiditis is typically associated with post-partum presentation?

Painless (Silent) Signup and view all the answers

When approaching a solitary thyroid nodule, what is the recommended initial step before performing a biopsy?

Check for TSH/T4 levels Signup and view all the answers

Which test is used to diagnose panhypopituitarism?

Triple Bolus Test Signup and view all the answers

What hormone is increased in panhypopituitarism when Insulin is infused during the Triple Bolus Test?

GH Signup and view all the answers

Which medication can cause a decrease in FSH and LH levels, mimicking hyperprolactinemia?

Antipsychotics Signup and view all the answers

What condition can be diagnosed by an initial hormone panel showing increased Prolactin levels?

Hyperprolactinemia Signup and view all the answers

What is the treatment approach for panhypopituitarism?

Replace deficient hormones Signup and view all the answers

What diagnostic test is commonly used in the workup for a patient with hyperthyroidism to determine thyroid activity?

RAIU scan Signup and view all the answers

In a patient presenting with hyperthyroidism, which of the following symptoms should raise suspicion for a thyroid storm?

Extreme hyperthermia and tachycardia Signup and view all the answers

What is the most common cause of hyperthyroidism?

Grave's disease Signup and view all the answers

Which of the following treatments is NOT typically used for managing hyperthyroidism?

Hydrocortisone Signup and view all the answers

In a patient with subacute thyroiditis, what is a common symptom that differentiates it from other forms of hyperthyroidism?

Tender thyroid gland Signup and view all the answers

Which diagnostic test is used to differentiate between a hot nodule and a cold nodule in the thyroid gland?

RAIU scan Signup and view all the answers

What treatment is specifically mentioned as a method to manage hyperthyroidism caused by Grave's disease?

$\text{Propylthiouracil}$ Signup and view all the answers

What is the primary treatment for hypothyroidism?

$\text{Levothyroxine (L-Thyroxine)}$ Signup and view all the answers

What is a characteristic feature of Hashimoto Thyroiditis, the most common cause of primary hypothyroidism in North America?

Cell-mediated destruction of thyroid follicles Signup and view all the answers

Which of the following conditions can lead to severe hypothyroidism known as Myxedema Coma?

Stress or trauma exposure Signup and view all the answers