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Hereditary hemochromatosis: diagnosis and treatment in primary care
1School of Nursing, Vanderbilt University, Nashville, USA.
Insights
Hereditary hemochromatosis (HHC) is a common inherited disorder causing iron overload. Early diagnosis and phlebotomy treatment can manage HHC and prevent fatal organ damage.
Area of Science:
- Genetics and Medicine
- Gastroenterology
- Endocrinology
Background:
- Hereditary hemochromatosis (HHC) is a prevalent inherited disorder among Caucasians.
- It results from excessive intestinal iron absorption leading to organ deposition.
Observation:
- Diagnosis is typically indicated by elevated ferritin and transferrin saturation, often with asymptomatic hepatomegaly.
- Genetic testing or liver biopsy confirms the diagnosis.
- Iron deposition affects the liver, heart, skin, endocrine organs, and joints.
Findings:
- Phlebotomy is the primary treatment, effectively depleting iron stores.
- Early diagnosis before organ damage allows for disease prevention.
- Reversible manifestations include skin pigmentation and some cardiac damage.
- Liver, endocrine, and joint damage are rarely reversible, with arthropathy often progressing.
Implications:
- Genetic testing of first-degree relatives is crucial upon HHC diagnosis.
- Early detection and treatment can render HHC a manageable chronic condition.
- Untreated HHC can be fatal due to progressive organ damage.
Abstract:
Hereditary hemochromatosis (HHC) is one of the most common inherited disorders in the Caucasian population. Diagnosis usually made after an elevation in ferritin and serum transferrin saturation is noted, often accompanied by asymptomatic hepatomegaly. Diagnosis is confirmed by genetic testing or liver biopsy. Damage to organs is due to excessive intestinal iron, which is transported to and then deposited in the liver parenchyma, and the heart, skin, and endocrine organs, causing skin pigmentation, development of cirrhosis and hepatic carcinoma, diabetes and endocrine failure, and heart failure. Bony changes can be manifested by arthritis, often in non-weight-bearing joints. The treatment of HHC is phlebotomy, which depletes iron stores. When diagnosis is made before organ damage occurs, treatment can prevent manifestations of the disease. Skin pigmentation and some cardiac damage may reverse on depletion of iron stores, but liver and endocrine damage is rarely reversible. Arthropathy is also not reversible, and often continues to progress even with effective treatment. When hemochromatosis is diagnosed, all first degree relatives of the patient should undergo genetic testing. With early detection and treatment this can be a manageable chronic disease. If undetected, it is potentially fatal.