esophageal hiatus

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esophageal hiatus

[ə¦säf·ə¦jē·əl hī′ād·əs]
(anatomy)
The opening in the diaphragm for passage of the esophagus.
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References in periodicals archive ?
HIATUS hernia is caused by the upper part of the stomach moving into the chest through a hole - or oesophageal hiatus - in the diaphragm.
Under high pressure, the intra-abdominal air can reach the mediastinum directly through a diaphragmatic defect (4), or via the retroperitoneal space and the oesophageal hiatus (5).