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Pyloric stenosis refers to a narrowing of the passage between the stomach and the small intestine. The condition, which affects infants during the first several weeks of life, can be corrected effectively with surgery. The main symptom is vomiting after feedings. Other symptoms include increased appetite, weight loss, infrequent bowel movements, belching, and diarrhoea. Due to dehydration, the infant may also have fewer wet diapers.
Statistical analysis of pyloric stenosis around the Switzerland has given the result as the first report of HH was published in 1853 by Bowditch. Rokitansky in 1855 demonstrated that esophagitis was due to gastroesophageal reflux, and Hirsch in 1900 diagnosed an HH using x-rays. Eppinger diagnosed an HH in a live patient, and Friedenwald and Feldman related the symptoms to the presence of an HH. In 1926, Akerlund proposed the term hiatus hernia and classified HH into the 3 types that we use today. The first elective surgical repair was reported in 1919 by Soresi. The physiologic link between HH and gastroesophageal reflux was made at the second half of the 20th century by Allison and Barrett. In the midst of a physiologic revolution, Nissen and Belsey developed their famous operations.