Editing Exudate (section)

===Types===
{{Transudate vs. exudate}}
* Purulent or suppurative exudate consists of plasma with both active and dead [[neutrophils]], [[fibrinogen]], and [[necrotic]] [[parenchymal cells]]. This kind of exudate is consistent with more severe infections, and is commonly referred to as [[pus]].
* Fibrinous exudate is composed mainly of [[fibrinogen]] and [[fibrin]]. It is characteristic of [[Rheumatic fever|rheumatic carditis]], but is seen in all severe injuries such as [[strep throat]] and [[bacterial pneumonia]]. Fibrinous inflammation is often difficult to resolve due to blood vessels growing into the exudate and filling space that was occupied by fibrin. Often, large amounts of antibiotics are necessary for resolution.
* [[Catarrh|Catarrhal exudate]] is seen in the nose and throat and is characterized by a high content of mucus.
* Serous exudate (sometimes classified as serous [[transudate]]) is usually seen in mild inflammation, with relatively low protein.<ref>Robbins Basic Pathology 7th ed</ref> Its consistency resembles that of serum, and can usually be seen in certain disease states like [[tuberculosis]]. (See below for difference between transudate and exudate)
* Malignant (or cancerous) pleural effusion is effusion where [[cancer cell]]s are present.<ref>[http://lungcancer.about.com/od/treatmentoflungcancer/a/malignanteffusion.htm About.com > Malignant Pleural Effusion] {{Webarchive|url=https://web.archive.org/web/20120226002755/http://lungcancer.about.com/od/treatmentoflungcancer/a/malignanteffusion.htm |date=2012-02-26 }} By Lynne Eldridge MD. Updated March 27, 2010</ref> It is usually classified as exudate.

Types of exudates: serous, serosanguineous, sanguineous, hemorrhaging and purulent drainage.
*Serous: Clear straw colored liquid that drains from the wound. This is a normal part of the healing process.
*Serosanguineous: Small amount of blood is present in the drainage; it is pink in color due to the presence of red blood cells mixed with serous drainage. This is a normal part of the healing process.
*Sanguineous: This type of drainage contains red blood due to trauma of blood vessels, this may occur while cleaning the wound. Sanguineous drainage is abnormal.
*Hemorrhaging: This type of drainage contains frank blood from a leaking blood vessel. This will require emergency treatment to control the bleed. This type of drainage is abnormal.
*Purulent drainage: This type of drainage is malodorous and can be yellow, gray, or greenish in color. This is an indication of an infection.