Medically reviewed by William Truswell, MDAn esophageal spasm occurs when the esophageal muscles contract abnormally. (These ...

A corkscrew esophagus is often seen in patients with diffuse esophageal spasm. Endoscopy is performed ... onto the gastric wall for about 2 cm distal to this point. In addition, if possible ...

The figures are stills from the linked videos. a; Classical achalasia, showing a dilated esophageal body bird beak-like narrowing of lower esophageal sphincter (see Video 1). b; Vigorous achalasia ...