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BACKGROUND Increasing evidence indicates that antineutrophil cytoplasmic antibody (ANCA)-positive conversion occurs in patients initially diagnosed with idiopathic pulmonary fibrosis (IPF) and as a(More)
A 47-year-old man presented to a local physician with a chief complaint of sputum and cough for 3 months. Chest X-ray showed bilateral consolidation in the upper lung fields, and the patient was(More)