ABSTRACT
The accumulation of fluid in the extracellular spaces of the lung parenchyma. This process can occur as a complication of a number of diseases of the heart and lungs. • There are two stages in the formation of pulmonary edema. • Firstly, the formation of interstitial edema, i.e. engorgement of the perivascular and
peribronchial interstitial tissue. • Secondly, the presence of alveolar edema where fluid has passed into and filled successive
alveoli.
