Twelve patients with achalasia treated by cardiomyotomy via a thoracos
copic approach have been studied prospectively. Seven patients had pre
viously undergone balloon dilatation with an unsatisfactory result. Th
e procedure was completed successfully in all patients without recours
e to thoracotomy. Morbidity was minimal and postoperative stay average
d 4 days. The functional result was good/excellent in 11 patients and
fair in one.