Hemosiderin is a brownish-yellow pigment found in the body, primarily composed of iron. It forms when there is an excess of iron in the body, often as a result of conditions like hemochromatosis or repeated blood transfusions. Hemosiderin is stored in various tissues, including the liver, spleen, and bone marrow, and serves as a way for the body to manage excess iron. When the body needs iron, hemosiderin can be broken down to release it. However, excessive accumulation of hemosiderin can lead to tissue damage and organ dysfunction. Monitoring hemosiderin levels is important in diagnosing and managing iron overload disorders.