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Abstract
Changes in peritoneal morphology were examined histologically and by scanning electron microscopy during porcine acute hemorrhagic (n = 8) and edematous (n = 9) pancreatitis and after intraperitoneal installation of hemorrhagic pancreatitis-associated peritoneal exudate in healthy piglets (n = 3). In all experimental groups peritoneal inflammatory changes with mesothelial damage were evident already 1 h after the induction of the disease, and increased with time. Hemorrhagic pancreatitis caused desquamation of mesothelial cells and denudation of the basal membrane. Intraperitoneal installation of hemorrhagic pancreatitis-associated peritoneal exudate in healthy piglets caused similar changes, whereas the changes in edematous pancreatitis were much less extensive. Peritoneal exudate accumulating in the peritoneal cavity during hemorrhagic pancreatitis caused early chemical peritonitis characterized by severe inflammation of the peritoneum with destruction of the mesothelial cell layer, leading to denudation of the underlying connective tissue. The significance of these changes in the pathophysiology of acute fulminant pancreatitis remains to be further studied.
