4.2　Plain Abdominal Radiographs

A standard abdominal radiograph（KUB）may detect diffuse pancreatic calcification in very far-advanced CP.The finding of diffuse calcification is specific for CP but is quite insensitive（Fig.7.2a，b）.Although the sensitivity of this finding is limited（around 30-40%），a plain film of the abdomen should be the first diagnostic test used when attempting to evaluate chronic abdominal pain as a positive finding obviates the need for additional testing（Yamada 2008）.

Fig.7.2　Chronic pancreatitis on plain abdominal radiographs.（a，b）Of two alcoholic patients show multiple coarse calcifications in the topography of the pancreas（arrows）(https://www.daowen.com)