CAMAL, ISM / SCIENCE PHOTO LIBRARY CAMAL, ISM / SCIENCE PHOTO LIBRARY
Endoscope view of the lower part of the oesophagus showing oesophagitis grade 4 caused by reflux. Grade 4 is the most severe grade of inflammation and the bleeding oesophageal wall (mucosa) is seen at upper centre. Reflux disease leads to stomach acid damaging the oesophagus.
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