A previously healthy 29-year-old woman was admitted to the hospital for dyspnea, fever at 39°C, arthralgia and myalgia. She had been treated one month before for a first episode of pneumonia treated with amoxicillin 3g daily for 10days. Clinical examination was normal, thoracic CT scan showed patchy bilateral areas of consolidation, nodular opacities, bronchial wall thickening, and small left pleural effusion. Routine blood examination showed a leukocyte count of 10,200/mm3 with 5830 neutrophils/mm3, serum creatinine was normal, and C reactive protein level was 65mg/L.
