Table II.

Results of pleura pathological examination for 86 patients with pleural effusions.

Pathological results	n (%)
Pleura cancer metastasis	37 (43.0)
Lung adenocarcinoma metastasis	26 (30.2)
Lung squamous cell cancer metastasis	6 (6.9)
Breast cancer metastasis	1 (1.1)
Alimentary canal tumor metastasis	2 (2.3)
Malignant tumor source unidentified	2 (2.3)
Pleural mesothelioma	3 (3.5)
Tuberculous pleuritis	20 (23.3)
Non-specific pleuritis	13 (15.1)
Parapneumonic effusion	4 (4.7)
Secondary fetal hydrothorax after pneumothorax	1 (1.1)
Secondary fetal hydrothorax of chronic cholecystitis	1 (1.1)
Undiagnosed by pathology	5 (5.8)
Failed examination	2 (2.3)