SUMMARY A consecutive series of 12 patients with stenosis secondary to duodenal ulceration were treated by proximal gastric vagotomy (PGV) and duodenoplasty or PGV and dilatation of the stenosis. Three months after operation the rate and pattern of gastric emptying of a solid meal was measured in each patient and compared with 18 patients with uncomplicated duodenal ulcer treated by PGV alone. Two patients developed gastric stasis in the early postoperative period which resolved with medical treatment. All patients were asymptomatic and were eating normally three months after operation. There was no significant difference in the rate of gastric emptying postoperatively between the patients who had stenosis and those who had uncomplicated duodenal ulcers. These results indicate that despite early postoperative difficulties in some patients pyloric dilatation or duodenoplasty with PGV are both effective treatments for stenosis due to duodenal ulceration.The superior early results of proximal gastric vagotomy (PGV) compared with other operations for duodenal ulcer are due to the preservation of an intact and innervated pyloric antrum (Johnston and Wilkinson, 1970;Clarke and Williams, 1972;Amdrup et al., 1974). However, gastric outlet obstruction is usually considered a contraindication to PGV unless it is combined with a drainage procedure. Pyloric or duodenal stenosis due to duodenal ulceration is usually treated by procedures that destroy the pylorus or bypass the pyloric antrum and are therefore likely to produce dumping, diarrhoea and bile vomiting (Wastell, 1969;Goligher, 1970).Johnston suggested that patients with duodenal ulcer complicated by stenosis should be treated by PGV and dilatation of the stenosis (Johnston et al., 1973). He also reported that the symptomatic results in patients with pyloric stenosis were better after PGV and dilatation than after truncal vagotomy and drainage (McMahon et al., 1976). Duodenoplasty is an alternative method of treating the stenosis without destroying the pylorus. The symptomatic results of PGV and duodenoplasty in 25 patients with pyloric stenosis were indistinguishable from those in patients with uncomplicated ulcer treated by PGV alone