ATI RN
Endocrine System Pediatrics Questions
Question 1 of 5
A painless nodule in the thyroid or in the neck is the usual presentation of childhood thyroid cancer. Of the following, the MOST common site of distant metastasis is
Correct Answer: D
Rationale: Lungs (E) are the most common site of distant metastasis in pediatric thyroid cancer.
Question 2 of 5
Patients with mineralocorticoid deficiency can develop the following EXCEPT
Correct Answer: C
Rationale: Mineralocorticoid deficiency causes metabolic acidosis, not alkalosis (C), due to sodium loss and hydrogen retention.
Question 3 of 5
Classic 21-hydroxylase deficiency occurs in approximately 1 in 15,000-20,000 births in most populations. Of affected infants, the salt-losing form constitute about
Correct Answer: D
Rationale: About 70% (D) of 21-hydroxylase deficiency cases are salt-losing.
Question 4 of 5
In primary aldosteronism, one of the following is low
Correct Answer: B
Rationale: Primary aldosteronism causes metabolic alkalosis, lowering serum CO₂ (B) due to HCO₃ retention.
Question 5 of 5
Klinefelter syndrome is the most common sex chromosomal aneuploidy in males, all the following features are true EXCEPT
Correct Answer: D
Rationale: Many with Klinefelter syndrome (47,XXY) complete high school (not few, D); other features are accurate.