in a group of 321 patients ( 33.6 % males and 66.4 % females ) with chronic pancreatitis of biliary origin ( 252 cases ) and chronic pancreatitis proper unrelated to biliary diseases ( 69 cases ) , indirect surgery -- to remove the biliary factor -- ( 291 patients ) and direct surgery on the gland for pancreatic decompression or even gland exeresis ( 30 patients ) were performed .
C0149521
chronic pancreatitis
C0030274
pancreatic