ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Oesophageal reflux. Coloured frontal (left) and oblique (right) X-rays of the chest and upper abdomen of a 10-month-old infant with oesophageal reflux. The cardia, the region where the contents of the oesophagus empties into the stomach (across bottom), is open rather than closed as it should be. A contrast medium (white) shows the outline of the stomach and the oesophagus. Gastroesophageal reflux is where the contents of the stomach (including stomach acid) rise upwards into the oesophagus.
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