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6202 Anatomy

A 2-hour-old male infant had been diagnosed in utero with polyhydramnios. Now he is vomiting stomach contents and bile. The vomiting continues for 2 days. Radiographic examination reveals a “double bubble” sign on ultrasound scan. The child cries consistently and is constantly hungry but has lost 300 g in weight. Which of the following conditions will most likely explain the symptoms?

ADuodenal stenosis
BDuodenal atresia
CHypertrophied pyloric sphincter
DAtrophied gastric antrum
Anatomy
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