A case of localized pleural mesothelioma is reported. A 49-year-old man was operated for coin lesion detected on routine chest X-ray. A tumor arose from the visceral pleura of right lower lobe and was pedunculated. Size of the tumor was 4 x 3 x 3 cm. Cut surface of the tumor was solid and yellowish white. Pathological diagnosis was fibrous type of the pleural mesothelioma. The patient is well and has no sign of recurrence for three years. There are 123 cases of localized pleural mesothelioma including our case in Japan. Five in 78 cases which was diagnosed to be benign histologically at operation, had recurrence later. It is important to follow up strictly for long term.
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