This will cause nausea, vomiting, abdominal pain, fever, blood in stool, peritonitis (an inflamed, infected lining of the abdomen) and death if not treated quickly enough.

If the pain is severe and concentrated on the lower right side of their abdomen, it could be appendicitis.

But by the end her sufferings were horrible, her abdomen badly burnt by the radiation treatment, the pain from her multiplying tumours far beyond the reach of morphine.