This causes pulmonary edema and pleural effusions. Pleurodesis is performed to prevent recurrence of pneumothorax or recurrent pleural effusion. Laterolateral chest radiograph can increase the diagnostic accuracy of lung consolidation and pleural effusion. During development this space partitions to form the pericardial, pleural and peritoneal cavities. The presence of a pleural effusion argues against pneumocystis pneumonia. Complications such as pleural effusion may also be found on chest radiographs. Clinical condition characterized by ovarian mass, ascites, and right-sided pleural effusion. The causes of the ascites and pleural effusion are poorly understood. A pathologic collection of pleural fluid is called a pleural effusion. Treatment depends on the underlying cause of the pleural effusion. By 1986 there were 85 deaths from pleural and peritoneal mesothelioma. Hydrothorax is a type of pleural effusion in which transudate accumulates in the pleural cavity. Sometimes, a chest x-ray is used to detect metastases in the chest or pleural effusion. These patients have an increased tendency to develop lung abscess, cavitation, empyema, and pleural adhesions. Hemothorax also can occur in people with lung or pleural cancer.