Effusion is an accumulation of gas or liquid in an area of the organism that normally does not contain it. These affected regions are generally natural cavities such as a joint
or "envelope" like the pleura
, the peritoneum
, or the pericardium
, for example, is an effusion of the pleura, pericarditis
an effusion of the pericardium, etc. Effusion is generally preceded by inflammation, either due to a virus or a violent traumatism.
Original article published by
. Translated by Jeff