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Pediatric total parenteral nutrition. Liver histopathology
Insights
Long-term total parenteral nutrition (TPN) in infants can cause liver disease progression. While initial changes like steatosis occur early, most hepatic alterations up to 90 days may be reversible, preventing liver failure.
Area of Science:
- Pediatric Gastroenterology
- Hepatology
- Clinical Nutrition
Background:
- Total parenteral nutrition (TPN) is crucial for infants unable to receive enteral nutrition.
- Prolonged TPN use is associated with potential hepatic complications.
- Understanding the temporal progression of TPN-induced liver injury is essential for management.
Purpose of the Study:
- To correlate clinical data with hepatic histopathology in infants receiving TPN.
- To establish the chronologic progression of liver disease associated with long-term TPN.
- To assess the reversibility and severity of TPN-related liver changes.
Main Methods:
- Analysis of hepatic histopathology from 31 infants undergoing TPN.
- Correlation of pathological findings with duration of TPN therapy.
- Histological examination for steatosis, extramedullary hematopoiesis, cholestasis, bile duct proliferation, fibrosis, and pigment deposition.
Main Results:
- Steatosis and eosinophilic extramedullary hematopoiesis observed within the first five days of TPN.
- Canalicular cholestasis and bile duct proliferation detected after 10 and 21 days, respectively.
- Significant portal fibrosis and micronodular cirrhosis emerged after 90 days and five months, respectively.
- Lipofuscin-like pigment and hemosiderin were prevalent in most livers.
Conclusions:
- TPN-induced liver disease in infants follows a chronologic progression.
- Hepatic changes within the first 90 days of TPN are likely reversible or not severe enough to cause liver failure.
- Close monitoring of liver function is recommended for infants on long-term TPN.
Abstract:
Correlation of clinical data with hepatic histopathology from 31 infants receiving total parenteral nutrition (TPN) suggest chronologic progression of liver disease with long-term TPN. Steatosis and a prominent eosinophil component in portal-tract extramedullary hematopoiesis appear during the first five days of TPN. The former persists for 90 days, the latter for three weeks. Canalicular cholestasis was present after ten days in 84.2% of the livers studied and bile duct proliferation in 63.6% after three weeks of TPN. Moderate to severe portal fibrosis only occurred after 90 days, whereas micronodular cirrhosis developed in one patient after five months of TPN. Lipofuscin-like pigment and hemosiderin were each demonstrated in 90.3% of the livers studied. Our findings suggest that with up to 90 days of TPN most changes should either be reversible or not severe enough to result in liver failure.