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Relapsing Polychondritis Mimicking Pulmonary Infection.

A 72-year-old woman was admitted to our hospital because of sore throat, fever, and hoarseness for 3 weeks, with a previous history of hypertension, diabetes, and curative resection of colon cancer. On admission, physical examination revealed reduced breath sounds dull to percussion on bilateral lower lung fields. Laboratory data showed leukocytosis, anemia, and elevated procalcitonin. Chest computed tomography showed bilateral pleural effusion (A). Despite antibiotic therapy, the patient had persistent fever and progressive leukocytosis. During treatment, inflamed pinna of ear (B), conjunctivitis (C), headache, and tinnitus developed. Further investigations of bone marrow and cerebrospinal fluid found no specific data. Low-titer antinuclear antibody was detected. Pure tone audiometry showed