Hepatomegaly is enlargement of the liver. It is a non-specific medical sign, having many causes, which can broadly be broken down into infection, hepatic tumours, and metabolic disorder. Often, hepatomegaly presents as an abdominal mass. Depending on the cause, it may sometimes present along with jaundice.
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👉 Hepatomegaly in the context of Congenital cytomegalovirus infection
Congenital cytomegalovirus (cCMV) is cytomegalovirus (CMV) infection during pregnancy which leads the a baby being born with the infection. Most have no symptoms. Some affected babies are small. Other signs and symptoms include a rash, jaundice, hepatomegaly, retinitis, and seizures. It may lead to loss of hearing or vision, developmental disability, or a small head.
CMV is a member of the virus family herpesviridae and is the most common congenital intrauterine infection. cCMV is caused when a mother is infected with CMV in pregnancy and passes it to her unborn baby. The risk of severe disease is greatest if the mother is infected in early pregnancy; most have no symptoms. Diagnosis is by tests in the first 3-weeks after birth; on preferably urine, although saliva and blood can be used. The chance of infection is reduced by hand washing, and avoiding touching saliva or urine of very young children.
In this Dossier
Hepatomegaly in the context of Hemochromatosis
Iron overload is the abnormal and increased accumulation of total iron in the body, leading to organ damage. The primary mechanism of organ damage is oxidative stress, as elevated intracellular iron levels increase free radical formation via the Fenton reaction. Iron overload is often primary (i.e, hereditary haemochromatosis, aceruloplasminemia) but may also be secondary to other causes (i.e., transfusional iron overload). Iron deposition most commonly occurs in the liver, pancreas, skin, heart, and joints.
People with iron overload classically present with the triad of liver cirrhosis, secondary diabetes mellitus, and bronze skin. However, due to earlier detection nowadays, symptoms are often limited to general chronic malaise, arthralgia, and hepatomegaly.
Hepatomegaly in the context of Hepatosplenomegaly
Hepatosplenomegaly (commonly abbreviated HSM) is the simultaneous enlargement of both the liver (hepatomegaly) and the spleen (splenomegaly). Hepatosplenomegaly can occur as the result of acute viral hepatitis, infectious mononucleosis, and histoplasmosis or it can be the sign of a serious and life-threatening lysosomal storage disease. Systemic venous hypertension can also increase the risk for developing hepatosplenomegaly, which may be seen in those patients with right-sided heart failure.
Hepatomegaly in the context of Retinol
Retinol, also called vitamin A1, is a fat-soluble vitamin in the vitamin A family that is found in food and used as a dietary supplement. Retinol or other forms of vitamin A are needed for vision, cellular development, maintenance of skin and mucous membranes, immune function and reproductive development. Dietary sources include fish, dairy products, and meat. As a supplement it is used to treat and prevent vitamin A deficiency, especially that which results in xerophthalmia. It is taken by mouth or by injection into a muscle. As an ingredient in skin-care products, it is used to reduce wrinkles and other effects of skin aging.
Retinol at normal doses is well tolerated. High doses may cause enlargement of the liver, dry skin, and hypervitaminosis A. High doses during pregnancy may harm the fetus. The body converts retinol to retinal and retinoic acid, through which it acts.