there are two different forms of chronic pancreatitis : one is obstructive pancreatitis which results from a pre-existing obstacle ( usually a tumour or a scar ) and the other , much more frequent , is chronic calcifying pancreatitis which seems to begin with the formation of precipitates in acini and ducts , later transformed into stones and calcifications made up of calcium carbonate , and therefore is a pancreatic lithiasis .
C0149521
chronic
C0030274
pancreatic