ATI RN
Pediatric Endocrine System Questions
Question 1 of 5
The MOST common cause of primary adrenal insufficiency in infancy is
Correct Answer: A
Rationale: Congenital adrenal hyperplasia (A), especially 21-hydroxylase deficiency, is the most common cause in infancy.
Question 2 of 5
Clinical manifestations of pheochromocytomas include the following EXCEPT
Correct Answer: D
Rationale: Obesity (D) is not a feature of pheochromocytomas; catecholamine excess causes weight loss.
Question 3 of 5
True gynecomastia is characterized by the presence of a palpable fibroglandular mass (located concentrically beneath the nipple and areolar region) at least
Correct Answer: D
Rationale: True gynecomastia requires a mass ≥2 cm (D) to distinguish from pseudogynecomastia.
Question 4 of 5
The 47,XXX (trisomy) chromosomal constitution is the most frequent extra-X chromosome abnormality in females, occurring in almost 1 in 1,000 liveborn females. It is characterized by the following EXCEPT
Correct Answer: C
Rationale: 47,XXX females typically have normal sexual development (not delayed, C).
Question 5 of 5
The following factors are implicated in the pathogenesis of type 1 DM EXCEPT
Correct Answer: D
Rationale: Excessive infection exposure (D) is not a risk factor; limited exposure may increase autoimmunity risk.