Different pathomorphologic patterns in exogenic infantile copper intoxication of the liver

Area of Science:

• Pediatric Hepatology
• Toxicology
• Pathology

Background:

• Chronic exogenic copper intoxication is a rare condition in infants.
• Distinguishing copper toxicity from other causes of infantile liver disease can be challenging.
• Indian childhood cirrhosis (ICC) shares some pathological features with copper-related liver damage.

Purpose of the Study:

• To review the pathomorphology of the liver in infants with chronic exogenic copper intoxication.
• To correlate liver pathology with clinical outcomes and copper levels.
• To assess the diagnostic significance of copper intoxication in infantile cirrhosis.

Main Methods:

• Histopathological examination of liver biopsies from 12 German infants with suspected chronic copper intoxication.
• Assessment of liver cell damage, Mallory body accumulation, and cirrhosis.
• Measurement of copper concentration in liver tissue and free cytosolic copper levels.

Main Results:

• Severe liver damage with Mallory bodies and necrosis, mimicking ICC, was observed in 8 cases, with 7 fatalities.
• Four children with stable courses showed micronodular cirrhosis, with less pronounced ICC features.
• No correlation was found between liver copper content and disease severity; copper levels were significantly elevated in all cases.
• Free cytosolic copper levels were markedly elevated, indicating active toxicity.

Conclusions:

• A spectrum of liver pathology exists in infantile copper disease, correlating with clinical outcomes.
• Liver copper levels do not predict disease severity.
• Copper intoxication should be considered in the differential diagnosis of unexplained micronodular cirrhosis in early infancy.