Fig. 1. Achalasia subtypes. (A) Type I (classic achalasia), there is no significant pressurization within the body of the esophagus. (B) Type II (achalasia with compression), there is rapid pan-esophageal pressurization. (c) Type III (spastic achalasia), this swallow shows spastic contraction.
© J Neurogastroenterol Motil
