胸腔积液概述)（Summary of pleural effusion）.docVIP

胸腔积液概述)（Summary of pleural effusion） Pleural effusion overview: Between the visceral and parietal pleura pleural cavity for potential under normal conditions in the pleural cavity containing liquid to make the two layer to reduce the friction of the pleural lubrication and absorption is often dynamic balance any pathology accelerated the emergence and in respiratory motion (or) to reduce its absorption occurs when the pleural effusion Pleural effusion etiology: 1 common infectious pleural effusion (the most common tuberculosis including bacteria, mycoplasma and virus) fungal parasites and other pathogens cause such as tuberculous exudative pleurisy and non tuberculous empyema pleural empyema specific actinomycosis pleural candidiasis of lung fluke pleurisy and pleural amebiasis 2 malignant pleural effusion pleural itself (primary) or other parts of malignant pleural metastasis (secondary) metastasis from lung cancer is the most common breast cancer ovarian cancer and gastric lymphoma of primary malignant tumor of pleura pleural mesothelioma 3 connective tissue diseases and allergic diseases of connective tissue diseases such as systemic lupus erythematosus rheumatoid arthritis systemic scleroderma dermatomyositis accompanied with pleural effusion and eosinophilia pleurisy after myocardial infarction syndrome 4 other reasons such as cholesterol pleurisy chylous pleural effusion hemothorax and hemopneumothorax transudative pleural effusion Mechanism Normal pleural cavity with colloid osmotic pressure and blood sugar content and PH value in the similar parietal pleura blood supply mainly from the high hydrostatic pressure and systemic blood supply of the visceral pleura from hydrostatic lower pulmonary pleura in two capillary colloid osmotic pressure in the pleural cavity liquid generated the same results the parietal pleura and double visceral pleura resorption often in pleural fluid dynamic balance every hour 35%~75% get a replacement of projections from the animal p