Définitions
1.NounA neuromuscular condition where a ring of muscles is unable to relax fully, causing obstruction of a lumen, as:
Such obstruction in the esophagus: esophageal achalasia.
2.NounSuch obstruction in the esophagus: esophageal achalasia.
3.NounSuch esophageal achalasia of primary (idiopathic) nature: primary esophageal achalasia.
4.NounSuch obstruction due to impairment of other gastrointestinal tract smooth muscles.