Pleural hypertrophy

The pleura is a layer of serosa that covers the lung surface and the inner side of the thorax. It is called the visceral and parietal pleura. The two layers of pleura surround a gap called the pleural cavity. Under normal circumstances, the pleural cavity contains only a small amount of serum, which acts as a lubricant, reduces the friction between the two layers of the pleura, and prevents adhesions. Pleural hypertrophy is first caused by pleurisy. There are two types of pleurisy, one is dry pleurisy (no pleural effusion) and the other is exudative pleurisy (with pleural effusion). The main cause of pleural hypertrophy is the second type of pleurisy.

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