[A case of alveolar hemorrhage associated with mixed connective tissue disease].

A 52-year-old woman was admitted to our hospital because of anemia and abnormal lung shadow. She had Raynaud's symptom for 6 months, and recently developed cough and easy fatigability. She had thrombocytopenia, restrictive pulmonary dysfunction, and swollen fingers. ANF was positive (X1280), and anti-RNP antibody was also positive. Mixed connective tissue disease was diagnosed. Chest X-ray showed a diffuse alveolar pattern, and BAL revealed many hemosiderin-laden macrophages. Alveolar hemorrhage was suspected. The pulmonary shadow resolved spontaneously, and no recurrence occurred after steroid and immunosuppressant therapy.