Related Experiment Videos
The Lundh test and faecal elastase 1 determination in chronic pancreatitis: a comparative study
C Gredal1, L G Madsen, S Larsen
1Section of Gastroenterology, Department of Internal Medicine, Glostrup University Hospital, Glostrup, Denmark.
Summary
The fecal elastase 1 (FE-1) test is a sensitive indicator of reduced exocrine pancreatic function in chronic pancreatitis (CP) patients with clear imaging findings. However, its diagnostic reliability decreases with equivocal imaging results.
Area of Science:
- Gastroenterology
- Diagnostic Medicine
- Pancreatic Physiology
Background:
- Reduced exocrine pancreatic function is key in diagnosing chronic pancreatitis (CP), especially when imaging is inconclusive.
- Sensitive diagnostic tests are crucial for early CP detection, particularly in the absence of clear morphological changes.
Purpose of the Study:
- To compare the diagnostic accuracy of the indirect fecal elastase 1 (FE-1) test against the direct Lundh test.
- To evaluate the FE-1 test's performance in patients with and without definitive imaging findings suggestive of CP.
Main Methods:
- Eighty-nine patients with suspected or confirmed CP underwent both Lundh and FE-1 tests.
- Abdominal ultrasonography and/or computed tomography were performed on all participants.
Main Results:
- A significant correlation (r=0.70) was observed between FE-1 and intraduodenal lipase levels.
- Overall predictive values for FE-1 were 81% (positive) and 73% (negative) when compared to the Lundh test.
- Patients with equivocal imaging had lower FE-1 predictive values (57% positive, 71% negative) than those with moderate/marked findings (84% positive, 78% negative).
Conclusions:
- FE-1 determination is a highly sensitive test for exocrine pancreatic function in CP patients with suggestive imaging findings.
- The predictive power of FE-1 is limited in patients with equivocal imaging, reducing its reliability as a standalone diagnostic tool.