Chapter 116 - Thyroid Quiz

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  • 1/10 Questions

    Where does the RLN enter the laryngeal framework?

    • Deep to the inferior thyroid artery
    • Lateral to the inferior constrictor muscles
    • Between the arch of the cricoids cartilage and the inferior cornu of the thyroid cartilage
    • Through the cricothyroid muscle
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Chapter 116 - Thyroid Quiz - Quiz
About This Quiz

The thyroid is tasked with producing hormones, which regulate the body’s energy use. The thyroid may be unable to undertake its functions due to too much or too little production of hormones. Standard treatment for hypothyroidism involves daily use of the synthetic thyroid hormone levothyroxine. This oral medication restores adequate hormone levels, reversing the signs and symptoms of hypothyroidism. Take up the quiz below to know how much you understood from chapter 116 on the thyroid.

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  • 2. 

    The primary method of spread for follicular carcinoma beyond the initial disease site is

    • Regional mets

    • Local extension

    • Distant mets

    Correct Answer
    A. Local extension
    Explanation
    Follicular carcinoma is a type of thyroid cancer that tends to grow slowly and can invade nearby tissues. Local extension refers to the spread of cancer cells into the surrounding tissues and organs near the initial disease site. Therefore, local extension is the primary method of spread for follicular carcinoma beyond the initial disease site. Regional metastasis refers to the spread of cancer to nearby lymph nodes, while distant metastasis refers to the spread of cancer to distant organs or tissues. However, in the case of follicular carcinoma, local extension is the main mode of spread.

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  • 3. 

    Otolaryngologic manifestations of hypothyroidism include all of the following except:

    • SNHL and tinnitus

    • Sinus congestion

    • Enlargement of the tongue

    • Husky, raspy voice

    Correct Answer
    A. Sinus congestion
    Explanation
    Hypothyroidism is a condition characterized by an underactive thyroid gland, which can lead to various symptoms throughout the body. Otolaryngologic manifestations refer to symptoms related to the ears, nose, and throat. Sinus congestion is not typically associated with hypothyroidism, as it is more commonly seen in conditions such as allergies or sinus infections. However, otolaryngologic manifestations of hypothyroidism can include sensorineural hearing loss (SNHL) and tinnitus, enlargement of the tongue, and a husky, raspy voice.

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  • 4. 

    The most common form of thyroid carcinoma is

    • Follicular

    • Medullary

    • Papillary

    • Anaplastic

    Correct Answer
    A. Papillary
    Explanation
    Papillary carcinoma is the most common form of thyroid carcinoma. It arises from the cells that produce and store thyroid hormones. It typically has a slow growth rate and a good prognosis. Papillary carcinoma is characterized by the presence of papillary structures and nuclear abnormalities, such as nuclear grooves and pseudoinclusions. It is more common in women and often occurs in younger individuals. Treatment usually involves surgical removal of the thyroid gland, followed by radioactive iodine therapy and hormone replacement therapy.

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  • 5. 

    The primary blood supply for the superior parathyroid glands is

    • Superior thyroid artery

    • Inferior thyroid artery

    • Thyrocervical trunk

    • Carotid artery

    Correct Answer
    A. Inferior thyroid artery
    Explanation
    The correct answer is the inferior thyroid artery. The superior parathyroid glands receive their primary blood supply from the inferior thyroid artery. This artery arises from the thyrocervical trunk, which is a branch of the subclavian artery. The inferior thyroid artery supplies blood to the thyroid gland and its branches also provide oxygenated blood to the superior parathyroid glands. The carotid artery and superior thyroid artery do not directly supply blood to the superior parathyroid glands.

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  • 6. 

    TSH levels are useful in all of the following clinical scenarios except

    • A 58-yr old female previously diagnosed with hypothyroidism, to establish the severity of her disease

    • Screening for hypothyroidism in a 24 yr old symptomatic woman

    • Guidance of thyroid replacement regimen in an elderly gentleman with longstanding hypothyroidism

    • Establishing diagnosis in a 38 yr old man with palpitations, wt loss and increasing diaphoresis, who had normal T4 and T3 levels

    Correct Answer
    A. A 58-yr old female previously diagnosed with hypothyroidism, to establish the severity of her disease
    Explanation
    TSH levels are not useful in establishing the severity of hypothyroidism in a patient who has already been diagnosed with the condition. TSH levels are typically used to diagnose hypothyroidism and monitor the effectiveness of treatment. In a patient who has already been diagnosed, other factors such as symptoms and clinical presentation would be more useful in determining the severity of the disease. Therefore, TSH levels would not be necessary in this scenario.

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  • 7. 

    Unlike other malignancies, which factor has an important prognostic significance in patientswith thyroid cancer

    • Gender

    • Regional mets

    • Age

    • Histologic type

    Correct Answer
    A. Age
    Explanation
    Age is an important prognostic factor in patients with thyroid cancer. This means that the age of the patient can provide valuable information about the likely outcome of the disease. Older patients tend to have a worse prognosis compared to younger patients. This could be due to various factors such as the presence of other comorbidities in older individuals or the aggressiveness of the cancer in older age groups. Therefore, age is an important consideration when assessing the prognosis and determining the appropriate treatment for patients with thyroid cancer.

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  • 8. 

    Methimazole and PTU may lead to remission of Graves’ disease by

    • Decreasing the release of thyroid hormone

    • An immunosuppressive action

    • Decreasing thyroid hormone biosynthesis

    • Toxic effects on thyroid follicular cells

    Correct Answer
    A. An immunosuppressive action
    Explanation
    Methimazole and PTU may lead to remission of Graves' disease by exerting an immunosuppressive action. This means that these medications can suppress the overactive immune response that is responsible for the production of antibodies that stimulate the thyroid gland to produce excessive amounts of thyroid hormone. By suppressing the immune system, these medications can help to reduce the production of thyroid hormone and bring it back to normal levels, leading to remission of the disease.

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  • 9. 

    All of the following should be administered to a patient with thyroid storm except

    • Supportive measures to maintain adequate CNS and CVS function

    • Propanolol

    • High doses of glucocorticoids

    • Purified thyroglobulin to bind excess free T4

    • Inorganic iodine, orally or by NG tube

    Correct Answer
    A. Purified thyroglobulin to bind excess free T4
    Explanation
    Purified thyroglobulin is not administered to a patient with thyroid storm because its purpose is to bind excess free T4, which is not a characteristic of thyroid storm. Thyroid storm is a life-threatening condition caused by excessive release of thyroid hormones. The treatment for thyroid storm includes supportive measures to maintain adequate CNS and CVS function, propanolol to control heart rate and reduce symptoms, high doses of glucocorticoids to inhibit the production of thyroid hormones, and inorganic iodine to inhibit the release of thyroid hormones.

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  • 10. 

    You have just completed a total thyroidectomy and SND for a 48-yr old woman with papillary CA and metastatic disease in the neck. She is scheduled to undergo I131 treatment in 6-8wks. In the interim, you prescribe

    • Synthroid

    • Cytomel

    • Synthroid and Cytomel

    • Nothing

    Correct Answer
    A. Cytomel

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  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 26, 2010
    Quiz Created by
    Ryan Palmer
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