megaesophagus

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megaesophagus

 [meg″ah-e-sof´ah-gus]
dilatation and muscular hypertrophy of most of the esophagus, above a constricted, often atrophied, distal segment. See also achalasia.

meg·a·e·soph·a·gus

(meg'ă-ē-sof'ă-gŭs, meg'ă-e-sof'),
Great enlargement of the lower portion of the esophagus, as seen in patients with achalasia and Chagas disease.

meg·a·e·soph·a·gus

(meg'ă-ĕ-sof'ă-gŭs)
Great enlargement of the lower portion of the esophagus, as seen in patients with achalasia and Chagas disease.
Synonym(s): mega-oesophagus.
References in periodicals archive ?
A CT angiogram demonstrated mega-oesophagus with mottled material and gas visualised, highly suggestive of food contents (Figure 1).
Acute airway obstruction from mega-oesophagus as first described by Bello and colleagues in 1950 is a rare presentation of achalasia (6).
The normal belch reflex mechanism has been shown to be defective in the majority of achalasia patients (16) and the aberrant mechanism is causative for acute airway obstruction from mega-oesophagus in at least one patient (15).
The marked hypercapnia in our patient which has been reported in other cases of achalasia mega-oesophagus (8) is attributable to very minimal tidal volumes.