A Newborn Boy Is Evaluated for Respiratory Distress Shortly After

A newborn boy is evaluated for respiratory distress shortly after delivery.  He was born at an estimated 37 weeks gestation via spontaneous vaginal delivery to a 20-year-old primigravid mother who had no prenatal care.  The mother has no chronic medical conditions and does not use tobacco, alcohol, or illicit drugs.  The boy's temperature is 36.7 C (98 F) , pulse is 144/min, and respirations are 70/min.  Pulse oximetry is 84% on room air.  Physical examination shows flattened facies.  There are intercostal retractions, and bilateral lungs have decreased aeration.  The abdomen is distended, and there is a palpable, soft, suprapubic midline mass.  The external male genitalia appear normal.  The extremities are cyanotic, and bilateral clubfeet are present.  Which of the following is the most likely underlying cause of this patient's clinical condition?

A) Congenital diaphragmatic hernia
B) Duodenal atresia
C) Hypospadias
D) Posterior urethral valves
E) Transient tachypnea of the newborn
F) Wilms tumor

Correct Answer:

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