Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

NLM Logo

Esophageal Achalasia MeSH Descriptor Data 2025


MeSH Heading
Esophageal Achalasia
Tree Number(s)
C06.405.117.119.500.432
Unique ID
D004931
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D004931
Annotation
CARDIOSPASM refers to spasm of the CARDIA, not the heart; not for esophageal spasm ( = ESOPHAGEAL SPASM, DIFFUSE)
Scope Note
A motility disorder of the ESOPHAGUS in which the LOWER ESOPHAGEAL SPHINCTER (near the CARDIA) fails to relax resulting in functional obstruction of the esophagus, and DYSPHAGIA. Achalasia is characterized by a grossly contorted and dilated esophagus (megaesophagus).
Entry Term(s)
Achalasia
Achalasia, Esophageal
Cardiospasm
Megaesophagus
NLM Classification #
WI 258
Public MeSH Note
1985; for ACHALASIA OF ESOPHAGUS see CARDIOSPASM 1974-1984; for ACHALASIA see CARDIOSPASM 1963-1973; CARDIOSPASM was heading 1963-1984
History Note
1985; for ACHALASIA OF ESOPHAGUS use CARDIOSPASM 1974-1984; for ACHALASIA use CARDIOSPASM 1963-1973; CARDIOSPASM was heading 1963-1984
Date Established
1985/01/01
Date of Entry
1999/01/01
Revision Date
2009/07/06
Esophageal Achalasia Preferred
Megaesophagus Related
page delivered in 0.121s