A 3-week-old boy has projectile non-bilious vomiting after every feed and a palpable olive-shaped mass. What is the diagnosis?

Answer and explanation

Correct answer: D. Hypertrophic pyloric stenosis

  1. Step 1: An olive-shaped epigastric mass with projectile vomiting indicates pyloric stenosis.
Answer
Hypertrophic pyloric stenosis.
Why not the others: Duodenal atresia, Gastro-oesophageal reflux and Malrotation with midgut volvulus do not fit.

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