Obstruction of the pancreatic ducts severely damages the pancreas and results in reduced capacity to make the enzymes required to digest proteins and fat.
[nationaljewish.org]
The secretions of exocrine glands are abnormal, resulting in excessively viscid mucus production which causes obstruction of passageways (including pancreatic and bile ducts
[icd9data.com]
Manifesting with excessively viscous mucus production, patients typically experience obstruction of passageways (e.g., pancreatic and bile ducts, intestines, and bronchi).
[nature.com]