Infant With Episodes of Bilious Vomiting

A 6-month-old female infant was brought to the pediatric emergency department (ED) for 2 episodes of bilious vomiting during the previous 3 hours. She had had 2 previous similar ED visits during the past 3 months, but the symptoms spontaneously resolved and no testing was conducted. Her physical examination result was unremarkable, and her abdomen was soft, nondistended and nontender. An abdominal radiograph showed nonspecific inferior displacement of the transverse colon (Figure 1). Point-of-care ultrasonography performed by the emergency physician (Figure 2) revealed the diagnosis.

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