section name header

Definition

exudate

(ek'syu-dāt )

[L. exsudare, to sweat out]

Any fluid released from the body with a high concentration of protein, cells, or solid debris.

Exudates are classified as fibrinous, hemorrhagic, diphtheritic, purulent, or serous. A fibrinous exudate may wall off a cavity, resulting in adhesions after surgery or in restrictive lung disease after an empyema.

SEE: empyema; infection; inflammation; pus; resorption; transudate.

hard e.Any of the yellow flecks or specks seen in the retinas of people with leaky retinal blood vessels. They are fatty by-products and are most often identified in people with diabetes mellitus.

soft e.Cotton-wool spot.