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Systemic amyloidosis complicating cystic fibrosis. A retrospective pathologic study
Archives of Pathology & Laboratory Medicine
|October 1, 1986
Summary
Amyloidosis, a protein buildup, is more common in cystic fibrosis (CF) patients over 15 than previously thought. While often microscopic, older CF patients should be monitored for potential organ complications.
Area of Science:
- Medicine
- Pathology
- Genetics
Background:
- Cystic Fibrosis (CF) is a genetic disorder affecting multiple organs.
- Amyloidosis is characterized by abnormal protein deposits in organs.
- The prevalence of amyloidosis in CF patients has not been well-established.
Purpose of the Study:
- To determine the prevalence of amyloidosis in deceased cystic fibrosis patients.
- To identify organs commonly affected by amyloid deposits in CF.
- To assess the clinical significance of amyloidosis in CF patients.
Main Methods:
- Retrospective autopsy study of 33 cystic fibrosis patients aged 15+ at death.
- Analysis of organ tissues for microscopic amyloid deposits.
- Comparison of clinical data between patients with and without amyloidosis.
Main Results:
- 33% (11/33) of deceased CF patients had amyloid deposits.
- Spleen, liver, and kidneys were most affected, primarily in blood vessels.
- No significant differences in CF diagnosis, infections, or longevity between groups.
- Only one patient exhibited clinical organ dysfunction due to amyloid.
Conclusions:
- Amyloidosis is more prevalent in older cystic fibrosis patients than previously reported.
- Increased lifespan in CF patients may contribute to higher amyloidosis rates.
- Older CF patients (15+) are at risk and should be evaluated if clinical signs emerge.
- Clinically evident amyloidosis is currently uncommon but may increase as CF patient longevity improves.