Idiopathic pulmonary hemosiderosis is an infrequent cause of pulmonary hemorrhage in children. It is classically defined by the triad of recurrent hemoptysis, iron-deficiency anemia, and diffuse parenchymal infiltration without an obvious cause. The pathogenesis remains unexplained, diagnosis may be difficult, and the clinical course exceedingly variable. A 4-year-old girl was admitted to the hospital with complaints of dyspnea, and skin and mucous membrane pallor. The suspicion of idiopathic pulmonary hemosiderosis led to the use of corticosteroid therapy with rapid improvement in clinical condition and discharge from hospital.
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