Introduction: Megaesophagus is defined as an esophagus measuring 8cm or larger on the barium swallow examination in a patient with Achalasia cardia. Its existence defines a late stage of achalasia and therapy will include an esophagectomy in its management. The latter carries a high morbidity and mortality.
Materials and Methods: We reviewed retrospectively all treatment naïve patients with Achalasia from 1st January 2000 and identified 10 patients with megaesophagus and these patients were analysed.
Findings: The average presenting age is 52±15 (range 20-73) years with 4 males: 6 females with 5 Malays:3 Chinese:2 Indians. The duration of illness before diagnosis was 7±5 (range 1-16) years. All patients had dysphagia, regurgitation and weight loss. All 10 patients demonstrated aperistalsis but interestingly 8 patients failed Lower Esophageal Sphincter (LES) intubation during Standard Esophageal Manometry due to coiling of the catheter. Failure to elicit Failure of LES relaxation translates as a high technical failure of manometry (80%) in the diagnosis of Achalasia. A confident diagnosis of Achalasia was made on barium swallow in 9 cases (90%). All 10 patients underwent pneumatic dilatation. Eight patients required only single dilatation. However two patients required two dilatations. The durability of the twelve pneumatic dilatation 27±13 (Range: 9-44) months with good symptomatic relieve and an objective post procedural weight gain of 10±6 (range:1-19) kg over a period of 3-12 months. There was no complications noted post procedure.
Conclusion: In advanced cases of achalasia, barium swallow is superior to manometry for obtaining the diagnosis. Pneumatic dilatation is an effective and safe procedure for patients with megaesophagus.