Ninety-three adult patients With benign esophageal stricture were rand
omized to receive balloon or bougie dilatation. Eighty-five patients w
ere eligible for analysis and were followed prospectively for a year.
Twenty-four patients required repeat dilatation within a year,: but 50
patients completed a year's follow-up without further dilatation. The
bougie group initially had a better symptomatic result, experiencing
significantly less dysphagia at five months, although this difference
had disappeared at one year. Eighteen patients in the balloon group re
quired redilatation for symptoms compared with six in the bougie group
. The bougie group had a significantly greater increase in their struc
ture diameter, and this was still present at one year after dilatation
. There was no significant difference in safety or patient acceptabili
ty. Balloons are probably more costly to use than bougies. Bougie dila
tation is to be preferred to balloon dilatation in adults except in sp
ecial circumstances.