Mesothelioma (benign-fibrous)
Definition:
A noncancerous tumor of the pleura (lining of the lung and chest cavity).
Causes, incidence, and risk factors:
Nonmalignant mesothelioma is usually a localized tumor that affects men more frequently than women. The tumor may grow to a large size and compress the lung, causing the symptoms of shortness of breath. This type of tumor is rare and does not appear to be related to previous asbestos or other exposure. The incidence is 5 out of 1,000,000 people.
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