MULTI-ECHO T2* MRI may help clinicians identify neonatal haemochromatosis (NH) earlier and distinguish it from other causes of neonatal liver failure, according to a retrospective study of infants aged 20 weeks or younger.1
NH is a rare but frequently fatal condition marked by severe liver injury and abnormal iron deposition outside the liver.
Researchers found that iron accumulation in the pancreas and thyroid on MRI closely aligned with NH diagnoses, whereas splenic iron deposition showed the opposite pattern.1 The imaging approach achieved 100% sensitivity, 89.5% specificity and 92.3% overall diagnostic accuracy for identifying the condition.1
Iron Patterns May Improve Diagnostic Certainty in Neonatal Haemochromatosis
Differentiating NH from other causes of neonatal liver failure can be difficult because infants often present with similar clinical features. The condition is now understood to be linked in nearly all cases to gestational alloimmune liver disease, in which maternal IgG antibodies target fetal hepatocytes and trigger complement-mediated liver injury.2
Gestational alloimmune liver disease can lead to congenital cirrhosis or acute liver failure, with or without iron overload and siderosis.2 Therefore identifying affected infants is clinically important because effective treatment strategies are available for subsequent pregnancies.2
The study evaluated 26 infants who underwent MRI using a gradient-recalled multi-echo T2* sequence for liver failure assessment.1 Seven infants had neonatal hemochromatosis, while 19 had alternative causes of neonatal liver failure.1
Two radiologists independently graded siderosis in the liver, pancreas, thyroid, spleen and renal cortex using a semiquantitative scale.1 Final diagnoses were established through consensus review involving hepatology, neonatology and pathology specialists using integrated clinical, biochemical, imaging and histopathological data.1
Thyroid and Pancreatic Siderosis Stood Out
The strongest positive correlations with NH were seen in the thyroid and pancreas.1 Liver siderosis also correlated with NH, although less strongly. In contrast, splenic siderosis demonstrated a significant negative correlation.1
Interobserver agreement was highest for liver assessment, with substantial agreement also reported for kidney, spleen, thyroid and pancreas evaluations.1 Researchers additionally identified significant differences in R2* values for the pancreas, thyroid and spleen between neonatal hemochromatosis and other neonatal liver failure groups.1
Potential Role in Earlier Management Decisions
The authors concluded that multi-echo T2* MRI offers a reliable, non-invasive method for distinguishing NH from other neonatal liver failure causes by identifying characteristic extrahepatic iron deposition patterns.1
Although the findings were drawn from a small retrospective cohort, the results suggest MRI-based assessment of pancreatic and thyroid siderosis could support earlier diagnosis and management decisions in critically ill neonates.1
References
1 Veiga-Canuto D et al. Utility of multi-echo MRI for differentiating neonatal hemochromatosis from other causes of neonatal liver failure. Eur Radiol. 2026;DOI: 10.1007/s00330-026-12553-0.
2 Feldman AG, Whitington PF. Neonatal hemochromatosis. J Clin Exp Hepatol. 2013;3(4):313-20.
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