DO_rare_slim has symptom disease has location pulmonary hemosiderosis MESH:D000097545 ICD9CM:516.1 UMLS_CUI:C0020807 MIM:235500 A lung disease with an unknown etiology affecting the lungs which results in bleeding from tiny alveolar capillaries. Examination of sputum and bronchoalveolar lavage fluid can disclose hemosiderin-laden alveolar macrophages (siderophages), and the lung biopsy shows numerous siderophages in the alveoli. Alveolar hemorrhage is characterized by hemoptysis, shortness of breath, alveolar infiltrates on chest radiograph, and various degrees of anaemia. Following a bleeding episode, the alveolar macrophages convert the hemoglobin's iron into hemosiderin within 36-72h. MIM:178550 disease_ontology ICD10CM:J84.03 ORDO:99931 DOID:12118 Idiopathic pulmonary hemosiderosis MESH C536281 obsoleted in 2024.[LS] SNOMEDCT_US_2025_09_01:190848001 DOID:0050330 brown induration brown lung hemosiderosis lung disease bleeding dyspnea lung