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MediumPaediatricsPyloric Stenosisukmlamrcgp aktpane

A 3-month-old infant presents with projectile, non-bilious vomiting after feeds. The infant appears hungry immediately after vomiting. A palpable 'olive-shaped' mass is noted in the epigastrium. Blood gas shows a hypochloraemic metabolic alkalosis. What is the most likely diagnosis?

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