In this study 113 cases were analysed; in which colon interposition was used for the reconstruction od the esophagus. The function od the esophageal grafts was evaluated 2 to 36 years after the reconstruction. Massive reflux was observed mainly when the anastomosis had been made to the gastric fundus. Reflux to isoperistaltic grafts was found in 21% of cases in children and in 27% od cases in adults, whereas for antiperistaltic grafts is was found in 33% od cases in children and in 61% od cases in adults. 4 children and 7 adult patients required a a reoperation.