• Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, P. R. China;
DU Ying, Email: doing0814@126.com
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Objective  To investigate the etiology of pleural effusions. Methods  All adult patients with pleural effusions of unknown etiology admitted to this hospital between January 2011 and December 2013 were investigated. The etiological data of these patients with pleural effusion were retrospectively reviewed. Results  During the 3-year period, 1 541 patients eventually were included in this study. The most frequent cause of pleural effusions was bacterial infection (38.7%), followed by malignancy (23.7%), congestive heart failure (13.1%), and tuberculosis (10.7%). The etiology of 120 patients (7.8%) remained uncertain. Conclusions  The most frequent cause of pleural effusion is bacterial infection, followed by malignancy, cardiac failure, and tuberculosis. These four etiologies account for over 85 percent of all pleural effusions.

Citation: WU Yanbing, DU Ying, LU Yong, WANG Xiaojuan, XU Lili. Etiology of pleural effusions. Chinese Journal of Respiratory and Critical Care Medicine, 2017, 16(5): 490-494. doi: 10.7507/1671-6205.201610032 Copy

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