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Pyloric Stenosis — RACP Paediatrics MCQ

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EasyGastroenterologyPyloric StenosisRACP Paediatrics

A 4-week-old presents with projectile non-bilious vomiting after every feed. Examination reveals a palpable olive-shaped mass in the right upper quadrant. Blood gas shows a hypochloraemic hypokalaemic metabolic alkalosis. What is the diagnosis?

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Correct answer: A — Pyloric stenosis

Pyloric stenosis: projectile non-bilious vomiting, olive mass, hypochloraemic alkalosis. USS confirms. Ramstedt pyloromyotomy is definitive.

Reference: RCH Melbourne – 2024 – Clinical Practice Guidelines: Pyloric Stenosis