Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin.
Types include:
Transfusion hemosiderosis
Idiopathic pulmonary hemosiderosis
Transfusional diabetesHemosiderin deposition in the lungs is often seen after diffuse alveolar hemorrhage, which occurs in diseases such as Goodpasture's syndrome, granulomatosis with polyangiitis, and idiopathic pulmonary hemosiderosis. [Source: Wikipedia 
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