Table 4-4.

Sequelae of Idiopathic Pulmonary Hemosiderosis

Sequela	Etiology
Recurrent hemoptysis	Active alveolar bleeding; very young children may not be able to expectorate heme.
Anemia	Chronic iron deficiency anemia related to sequestration of hemosiderin within alveolar macrophages
Pulmonary fibrosis	Scar tissue and clot formation at the sites of alveolar hemorrhage
Restrictive lung disease	Pulmonary fibrosis
Pulmonary hypertension	Obstruction of pulmonary blood flow in interstitial fibrosis
Cor pulmonale	Pulmonary fibrosis and hypertension