Clinical consult: iron overload--hereditary hemochromatosis

Anne L Matthews1, Sarah J Grimes, Georgia L Wiesner

  • 1Department of Genetics, Case Western Reserve University, University Hospitals of Cleveland, 10900 Euclid Avenue, Cleveland, OH 44106, USA. alm14@cwru.edu

Primary Care
|August 28, 2004
PubMed

Insights

Hereditary hemochromatosis (HHC) causes iron overload due to excessive dietary iron absorption. Untreated HHC can lead to severe organ damage, including liver cirrhosis and heart failure.

Area of Science:

  • Genetics and Medicine
  • Gastroenterology
  • Endocrinology

Background:

  • Hereditary hemochromatosis (HHC) is a common genetic disorder causing excessive dietary iron absorption.
  • Iron overload in HHC leads to multi-organ dysfunction affecting the liver, heart, pancreas, and other tissues.
  • Untreated HHC can result in severe health complications like liver cirrhosis, hepatocellular carcinoma, diabetes, and cardiac issues.

Purpose of the Study:

  • To present a case study of hereditary hemochromatosis.
  • To detail the inheritance, genetics, and natural history of HHC.
  • To outline diagnostic and management strategies for HHC.

Main Methods:

  • Review of a clinical case of hereditary hemochromatosis.
  • Analysis of genetic inheritance patterns.
  • Discussion of clinical presentation, diagnosis, and treatment.

Main Results:

  • The case illustrates the typical presentation and progression of HHC.
  • Genetic factors play a crucial role in HHC development.
  • Early diagnosis and management are key to preventing severe complications.

Conclusions:

  • Hereditary hemochromatosis is a significant genetic condition requiring timely diagnosis and intervention.
  • Understanding the genetics and clinical course of HHC is vital for effective patient care.
  • This case study highlights the importance of recognizing and managing iron overload disorders.

Related Concept Videos

Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Jaundice01:25

Jaundice

Jaundice, or icterus, is the yellow discoloration of the skin, sclerae, and mucous membranes. It happens when plasma bilirubin levels rise above 2.5-3 mg/dL, leading to bilirubin deposition in tissue.Bilirubin is a byproduct of hemoglobin degradation. In macrophages, hemoglobin breaks down into globin and heme. Globin is converted into amino acids, while heme is turned into biliverdin by heme oxygenase, which is then reduced to unconjugated bilirubin by biliverdin reductase.Unconjugated...
Portal Hypertension01:22

Portal Hypertension

Portal hypertension is an increase in blood pressure within the portal venous system. Normally, this pressure is less than 5 mmHg. It is considered clinically significant when it rises above 10 mmHg. At this threshold, complications from altered blood flow and venous congestion emerge.EtiologyPortal hypertension arises from conditions that impede blood flow through the liver. The most common cause is cirrhosis, in which chronic liver injury leads to fibrotic scarring. This fibrosis narrows or...
Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
Diseases of the Liver and Gallbladder01:26

Diseases of the Liver and Gallbladder

Liver and gallbladder diseases are a significant health concern, with prominent conditions including cirrhosis, hepatitis, non-alcoholic fatty liver disease (NAFLD), and gallstones. Jaundice is a common manifestation of liver and biliary disease.
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not related to...
Disorders of Hemostasis01:24

Disorders of Hemostasis

Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.