Relationship between pancreatic exocrine function and histological changes in chronic pancreatitis

Area of Science:

• Gastroenterology
• Pancreatology
• Diagnostic Medicine

Background:

• Chronic pancreatitis diagnosis relies on correlating exocrine pancreas function with histological changes.
• Accurate assessment of exocrine pancreatic function is crucial for patient management.

Purpose of the Study:

• To establish the correlation between exocrine pancreatic function, assessed by the cholecystokinin secretin test (CST), and histological findings in chronic pancreatitis.
• To evaluate the diagnostic performance of CST in identifying exocrine pancreatic dysfunction.

Main Methods:

• Compared CST results with histological grading in 108 patients with suspected chronic pancreatitis.
• Graded exocrine pancreatic insufficiency (0-4) based on abnormal CST parameters.
• Graded histological findings (0-4) to assess pancreatic tissue changes.

Main Results:

• A significant correlation (tau = 0.59, p < 0.01) was found between histological grading and overall CST scoring.
• Significant correlations were observed between histology and individual CST parameters (volume, amylase output, bicarbonate concentration).
• CST demonstrated 67% sensitivity, 90% specificity, and 81% efficiency in diagnosing chronic pancreatitis based on histology.

Conclusions:

• The cholecystokinin secretin test (CST) is a reliable indicator of exocrine pancreas histology in chronic pancreatitis.
• CST provides a direct functional assessment that strongly correlates with structural pancreatic changes.
• These findings support the use of CST as a valuable tool in the diagnosis and assessment of chronic pancreatitis.