Congenital hyperophic pyloric stenosis usually presents -

Ans. is 'c' i.e., Around 2 weeks after bihThe symptoms vomiting usually stas after 3 weeks of age but symptoms may develop as early as 1st week of life and as late as 5 months of life. - Nelson Congenital hyperophic pyloric stenosis Hyperophic pyloric stenosis is the commonest surgical disorder of the stomach during infancy.Pylorus is thickened and elongated and its lumen is narrowed due to hyperophy of circular muscle fibers of pylorus.More common in boys.o More common in infants of blood group 'B' and 'O'.o Associated congenital defects are --> Tracheoesophageal fistula and hypoplasia or agenesis of inferior labial frenulum.o May be associated with Turner syndrome, Trisomy 18.o Symptoms are not present at bih.The vomiting usually stas after 3 weeks of age.