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NBME 21 Answers

nbme21/Block 4/Question#18

A previously healthy 4-week-old male newborn is ...

Pyloric stenosis

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submitted by hungrybox(433),

HIGH YIELD: "nonbilous vomiting" means that the issue/obstruction comes before (proximal to) the second duodenum, where bile is released.

At around ~4 weeks (give or take a few) is when pyloric stenosis usually shows up.

ez pts for u now keep it up

 +2  upvote downvote
submitted by divya(29),

obvious answer choices between duodenal atresia and pyloric stenosis. duodenal atresia presents with bilious vomiting within 1st day of life. other features - double bubble on xray. whereas pt here has non bilious vomiting at 4th week of life.