Edema is fluid accumulation in the tissues or bodily cavity. Edema word derived from the Middle English word Idema that comes from the Greek word for "swelling" edema observable condition that usually clear inflation. The most common in the feet and legs, a subcutaneous edema in spaces inside tissues outside of blood vessels, called nested namespaces or other parts. Edema often symptomatic of underlying liver disease, heart and kidneys and is directly caused by retention of salt. Besides the legs and feet, other key areas in edema that can occur in the lungs (alveoli) or peritoneal cavity and the abdomen and chest. When an edema in the lungs, called pulmonary edema and usually due to heart failure. Can most people in a large quantity of salt without the complexity, but infected underlying problem of excess processing and desalination. Living with heart disease experience reduced flow of blood to their kidneys, then affects the ability of the kidneys to eliminate the surplus. This leads to the retention of liquids, and possibly edema.
