Protrusion of the upper stomach into the lower portion of the thorax.
When the upper portion of your stomach pushes through your diaphragm and into your chest cavity, it is known as a hiatal hernia. A hiatal hernia happens when the large muscle separating your chest from your abdomen gives way to the upper part of your stomach (diaphragm).
The patient's and his family's understanding of the changed relationship between the esophagus and the stomach is crucial. A section of the upper stomach slides up into the lower region of the thorax, and the diaphragm aperture through which the esophagus travels enlarges. The anomaly is not an involuntary, protruding, or twisted segment.
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