Out of a series of 103 patients operated on for peptic stenosis of the oesphagus, we carried out 63 conservative operations, 29 by the thoracic route, 34 by the abdominal route. The operation consists of retrograde dilatation, by finger or by instrument, combined with an anti-reflux arrangement. Among the various technics of the latter, plicature of the fundus has proved the most effective. Gradually, the indications for the abdominal approach have become dominant, even if the cardia cannot be lowered. One may then use a sleeve on the gastric cone, which until now, in 23 cases has given excellent results. One may thus carry out by an extremely benign operation without any mortality, a surgical cure not only of supple stenoses, but also of certain tight fibrous stenoses, considered insuperable. Postoperative dilation was rarely necessary. The results of which some are 8 years old, seem stable in the vast majority of cases. The proportion of excellent results was 81 p. cent of the series. It was higher in the group of plicatures of the fundus where there were only two failures. No case of cancer was observed in the remaining oesphagus.