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