Teenager with abdominal pain and a history of cystic fibrosis

CT of a dilated but normal appendix in a patient with cystic fibrosis
Axial CT with contrast of the abdomen (above left) shows an irregular contour to the liver and fatty replacement in the pancreatic head. Axial (below left) and coronal (right) CT show the appendix is dilated to a diameter of 12 mm but there are no inflammatory changes around it.

The diagnosis was a dilated but normal appendix in a patient with cystic fibrosis along with liver cirrhosis due to cystic fibrosis and pancreatic insufficiency due to cystic fibrosis.