Operative Findings (Hypertrophic Pyloric Stenosis)

Operative findings in a 2-month-old boy with a stenosis of the gastric outlet. On the right side of the patient the hand of the surgeon pulls the stomach out of the operating wound; the grasped antrum is recognizable; it runs into a longitudinal and oval swelling lying below the smaller of the two retractors. The longitudinal oval swelling corresponds to the hypertrophic pylorus which may be palpated clinically in the right upper abdomen as a rough mass like an olive. This malformation occurs more frequently in boys; this patient is a little older than the preferred age.