Endoscopic treatment of esophageal achalasia

Figure 1 Barium swallow esophagrams showing typical bird-beak appearance of the distal esophagus.

Figure 2 High-resolution manometric types of achalasia according to the Chicago Classification: Type 1, characterized by the absence of peristalsis (A); type 2, defined by the presence of esophageal compression, named panesophageal pressurization (B); type 3, characterized by the presence of peristaltic fragments or spastic waves (C).

Figure 3 Pneumatic dilation with a Rigiflex balloon under endoscopic control.