accumulation of fluid in the pleural cavity (the space between the lungs and the walls of the chest) often resulting from disease of the heart or kidneys
hydrothorax详细解释
hy.dro.tho.rax n.（名词）Accumulation of serous fluid in one or both pleural cavities.胸腔积水：一个或两个胸腔中的浆状液体的聚集
