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Stricture occurs in 1.2-4.2% of colonic anastomoses. Symptomatic strictures have previously been treated by resection and re-anastomosis and more recently by radiographically guided dilatation by a modified Seldinger technique. This paper describes the endoscopic balloon dilatation of five symptomatic cases and three asymptomatic cases. Eight patients underwent balloon dilatation of colonic anastomotic strictures. Four patients had no symptoms post dilatation and the strictures remained patient on follow-up endoscopy. All the remaining patients required re-dilatation at approximately 2 months. One of these patients underwent dilatation but remained symptomatic, the dilatation was repeated and a colonic perforation occurred at this time. Of the other three, two continue to be followed up, and are well and one patient died of disseminated malignancy. Balloon dilatation with 'through the scope' dilators is a simpler technique than radiologically guided dilatation. These early results suggest that endoscopic dilatation may avoid further surgery in some patients with anastomotic stricture.