Is esophageal manometry essential for the diagnosis of achalasia? Identifying patients with achalasia by the esophageal clearance method.

Approximately 2.4% of achalasia cases had mostly normal esophageal clearance and no esophageal dilation. Based on the state of esophageal clearance by TBE and the maximum transverse diameter of the esophagus, it seems by and large possible to identify achalasia cases.