Upper abdominal distension is mostly related to digestive system diseases, mainly stomach diseases and diseases of the liver, gallbladder and pancreas, such as chronic gastritis, functional dyspepsia, liver cirrhosis, pyloric obstruction, gastric dilatation, gastric cancer, cholecystitis, pancreatic cancer and other diseases.
(a) Abdominal distention caused by stomach disorders is mostly located in the middle and upper abdomen.
Abdominal distention caused by hepatobiliary diseases is mostly located in the right upper abdomen
Abdominal distention caused by pancreatic diseases is mostly located in the left upper abdomen.