Pyloric Olive

An abdominal mass palpated in early infancy which corresponds to a ‘knot’ of hypertrophied peripyloric smooth muscle and mucosal oedema seen in pyloric stenosis; it is most common in first-born male infants at 7 weeks
Lab Metabolic alkalosis, hypokalemia, hypochloremia Management Rehydrate, open seromuscular layer—Fredet-Ramstedt pyloromyotomy
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In the past the pyloric olive, was said to be felt by surgeons in up to 80% of patients.