Pathological Features of Idiopathic pulmonary Hemosiderosis are all except: (A) Hyperplasia of type II alveolar pneumocytes, (B) Alveolar capillary dilatation, (C) Diffuse alveolar proteinosis, (D) Hemosiderin laden macrophages
Answer is C. Idiopathic pulmonary Hemosiderosis is characterized by diffuse alveolar hemorrhage.