Assertion: cervical esophagus | /r/HasProperty | flattened owing
Facets:
value: to compression by surrounding structures
type: CAUSE
Source sentences:
text: As assessed by barium esophagography, the cervical esophagus is flattened owing to compression by surrounding structures; the thoracic portion is more rounded because of the negative-pressure environment of the thorax; and the abdominal portion is again flattened owing to positive intra-abdominal pressure.