pleural effusion
(PLOOR-ul eh-FYOO-zhun)
An abnormal collection of fluid between the thin layers of tissue (pleura) lining the lung and the wall of the chest cavity.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at opm.gov.