Definition of "pleural" [pleu•ral]

• Of, relating to, or affecting the pleura, or the sides of the thorax. (adjective)
• Thin and transparent. (adjective)

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• "Mesothelioma that affects the pleura can cause these signs and symptoms: chest wall pain pleural effusion, or fluid surrounding the lung shortness of breath fatigue or anemia wheezing, hoarseness, or cough blood in the sputum (fluid) coughed up hemoptysis"
• "The thin space between the lungs and the rib walls, called the pleural cavity, is in health a vacuum."
• "The two layers are continuous with one another around and below the root of the lung; in health they are in actual contact with one another, but the potential space between them is known as the pleural cavity."