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Hereditary hemochromatosis in children, adolescents, and young adults
T B Haddy1, O L Castro, S R Rana
1Department of Pediatrics and Child Health, Howard University Hospital, Washington, D.C. 20060.
Insights
Hereditary hemochromatosis, a common iron overload disorder, can affect children and adults. Early screening and diagnosis are crucial for preventing serious health complications and are lifesaving.
Area of Science:
- Genetics
- Internal Medicine
- Pediatrics
Background:
- Hereditary hemochromatosis is a primary cause of iron overload, impacting adults and children.
- Iron overload can lead to severe morbidity across all age groups, with documented cases in children as young as two.
- Younger patients present distinct risk profiles and organ involvement compared to older individuals.
Purpose of the Study:
- To highlight the significance of early diagnosis and screening for hereditary hemochromatosis.
- To differentiate clinical presentations and risks in pediatric versus adult populations.
- To emphasize the importance of identifying at-risk individuals for timely intervention.
Main Methods:
- Review of existing literature on hereditary hemochromatosis.
- Analysis of age-specific clinical manifestations and risk factors.
- Identification of key screening tests and diagnostic criteria.
Main Results:
- Hereditary hemochromatosis presents differently in younger versus older populations, with females and males at equal risk in youth.
- Pediatric patients often exhibit cardiac and gonadal issues, while older patients are more prone to liver disease and diabetes.
- Transferrin saturation is a reliable screening tool, and liver biopsy remains a key diagnostic method.
Conclusions:
- Early detection and treatment of hereditary hemochromatosis are vital for preventing severe health outcomes.
- Screening recommendations should consider age-specific risks and symptoms.
- Development of noninvasive methods for body iron quantification is ongoing.
Abstract:
Hereditary hemochromatosis is the most common cause of iron overload in adults and is probably the second most common cause of iron overload in children in the United States next to transfusional overload. Serious morbidity from this disorder of iron absorption can occur in early as well as in middle and advanced age, iron overload having been reported in children with hereditary hemochromatosis as early as 2 years of age. Younger persons differ from older persons in that the risk for iron loading in females appears to be equal to the risk for males, in contrast to a preponderance of males among older patients. Also, younger patients frequently demonstrate cardiac and gonadal involvement, with cardiac failure commonly leading to death, whereas older patients are more likely to have liver involvement and diabetes mellitus, with liver failure and hepatoma commonly leading to death. Because early diagnosis and treatment can prevent the toxicities of iron overload, appropriate screening can be lifesaving. Transferrin saturation is the most reliable screening test. Liver biopsy with objective measurement of hepatic iron stores is the most important diagnostic criterion at present, although reliable noninvasive methods for quantitating body iron are being developed. Young individuals who should be screened for iron overload include patients with cardiac myopathies, hypogonadism, amenorrhea, loss of libido, diabetes mellitus, other endocrine disorders, cirrhosis of the liver, and arthritis, as well as the siblings, parents, and children of patients with hereditary hemochromatosis or iron loading of unknown cause.