there were 20 episodes of abdominal pain ( peritonitis : 9 , pancreatitis : 4 , acute cholecystitis : 2 , duodenal ulcer : 3 , intestinal infarction : 1 , unexplained pain without diagnosis at laparotomy : 1 ) and 11 of gastrointestinal hemorrhage ( melaena or hematemesis : 4 ;
C0000737
abdominal pain
C0030193
pain