A 15-year-old male had a history of increasing dyspnea on exertion, cough, sputum production, fever, weakness, hemoptysis, and diarrhea. Chest radiography demonstrated bilateral alveolar consolidation. Bronchoalveolar lavage fluid analysis revealed extensive hemosiderin-laden alveolar macrophages. On the basis of iron deficiency anemia, diarrhea, raised antigliadin and antiendomysial antibodies, widespread villous atrophy, and crypt hyperplasia on intestinal biopsy, celiac disease was diagnosed. After treatment with a gluten-free diet, all his clinical symptoms and radiographic findings improved within two weeks.