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by Candido E. Rivera, MD

Hemosiderosis is iron deposits in local tissues that do not cause tissue damage.

Hemosiderosis can result from bleeding within an organ. Iron that is released from red blood cells is deposited within that organ. The lungs and kidneys are often sites of iron deposits. Lung disorders that cause bleeding include Goodpasture syndrome (see Goodpasture Syndrome), pulmonary hypertension (see Pulmonary Hypertension). and pulmonary fibrosis (see Idiopathic Pulmonary Fibrosis). Disorders that cause red blood cells to break down within the blood stream (hemolysis) cause iron deposits in the kidneys. Hemolysis often causes anemia. Occasionally, iron loss from bleeding within an organ causes iron deficiency anemia because iron in tissues cannot be reused.