This study of acute appendicitis in childhood is based on 612 cases treated in the Children's Surgical Service at Bellevue Hospital for the ten year period from 1926 to 1935 inclusive. It is made as a sequel to Beekman's1 report of 145 cases taken from the same service at an earlier date. It includes all children up to the age of 13 years. The final conclusions are based on observations made in our return clinic, where we have observed 475, or 82.4 per cent, of the 576 living patients. These children have been followed for an average of eleven months. No case has been included in this series unless it was pathologically proved to be acute appendicitis.
The cases have been classified as (1) unperforated, (2) abscessed and (3) spreading peritonitis. Cases presenting a question as to which group they belonged have been included in the less serious group.