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Hemosiderin deposition in the liver is a common feature of hemochromatosis and is the cause of liver failure in the disease. Selective iron deposition in the beta cells of pancreatic islets leads to diabetes [ 4 ] [ 2 ] due to the distribution of transferrin receptor on the beta cells of islets [ 3 ] and in the skin leads to hyperpigmentation.
Hemosiderin image of a kidney viewed under a microscope. The brown areas represent hemosiderin. Hemosiderin or haemosiderin is an iron-storage complex that is composed of partially digested ferritin and lysosomes. The breakdown of heme gives rise to biliverdin and iron. [1] [2] The body then traps the released iron and stores it as hemosiderin ...
Hemosiderin hyperpigmentation is pigmentation due to deposits of hemosiderin, and occurs in purpura, haemochromatosis, hemorrhagic diseases, and stasis dermatitis. [ 1 ] : 853 See also
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. [3] However, due to earlier detection nowadays, symptoms are often limited to general chronic malaise, arthralgia, and hepatomegaly. [3]
Targetoid hemosiderotic hemangioma, also known as a hobnail hemangioma is a skin condition characterized by a central brown or purplish papule that is surrounded by an ecchymotic halo. [1] [2] It may appear similar to melanoma. It was first described by Santa Cruz and Aronberg in 1988. [2]
Atrophic scars, persistent hyperpigmentation, mononeuritis multiplex from vasa nervorum thrombosis, and cutaneous hemosiderosis in the lower limbs from erythrocytes oozing from the high-pressure regimen veins due to hemosiderin deposits in the skin are among the chronic complications associated with livedoid vasculopathy. [7]
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Iron is also stored as a pigment called hemosiderin, which is an ill-defined deposit of protein and iron, created by macrophages where excess iron is present, either locally or systemically, e.g., among people with iron overload due to frequent blood cell destruction and the necessary transfusions their condition calls for. If systemic iron ...