A 64-year-old man visited our hospital because of an abnormal shadow on an annual health check-up. Chest computed tomography demonstrated a nodule 22 mm in size in the right lung. 18-F fluorodeoxyglucose positron emission tomography showed abnormal accumulation in the nodule. Since lung cancer was suspected, a right wedge resection was performed. Pathological examination showed no malignant findings in the nodule. The diagnosis of lung abscess by drug resistance Pseudomonas aeruginosa was made by the pus culture and the postoperative course was uneventful.
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