Clinical Analysis of Congenital Hypertrophic Pyloric Stenosis

Fifteen infants with congenital hypertrophic pyloric stenosis who underwent pyloromyotomy at Dept. of Surgery, Ewha Womans Univ. Hospital for 5 years from Sept. 1981 to Aug. 1986, have been reviewed. The results were as follows. 1) Infants with congenital hypertrophic pyloric stenosis were 1.6% of the total pediatric surgical patients. 2) Eleven cases male and 4 cases were female. A ratio of male to fermale was 2.8:1. 3) The age distribution was 11 cases(73.3%) between 4 and 6 weeks. 4) The distribution of birth rank in siblings was 7 cases of first-born infants and 8 cases of second-born infants. 5) The distribution of type of feeding was 7 cases of breast-fed infants and 6 cases of cow milk-fed infants. 6) The seasonal distribution was 6 cases in Winter, 5 cases in Spring, and each 2 cases in Summer and Autumn. 7) The number of cases associated with the other congenital anomalies was 3 cases. 8) Non bile-stained projectile vomiting was the most prominant symptom and onset time was mostly between 3 and 5 weeks. 9) The pathognomonic olive shaped mass was palpable in 11 cases and the size of mass was average 2.4x1. 4cm. 10) The results of Ramstedt pyloromyotomy or Koop's modification was excellent without operative faults.