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Related to Exudates and transudates: Serous exudate


A proteinaceous material that passes through blood vessel walls into the surrounding tissue in inflammation or a superficial lesion.
Any substance that is exuded.



fluid exuded by small blood vessels during an inflammation that contains protein, leukocytes, erythrocytes, minerals, cellular elements and, frequently, the microbes that caused the inflammation. Any inflammation may give rise to an exudate, which will saturate the surrounding tissues or collect in the body cavities. By compressing the surrounding organs and tissues an exudate may interfere with their function. An exudate helps to spread the infection when it escapes into the tissues from the focus of inflammation. There are serous, purulent, bloody, and fibrinous exudates, depending on the dominant elements. If treated promptly and correctly, an exudate is completely resorbed without leaving any changes after it. An exudate must be distinguished from edematous fluid (transudate), which collects in the body cavities and tissue interstices following the development of an edema.

References in periodicals archive ?
Whereas in case of exudates, specificity of those parameters was low that may lead to misclassification of exudates and transudates.
The discriminative ability of Light's criteria and newly adapted formulas for exudates and transudates were calculated by using ROCs analysis and AUCs.
Evaluation of cholinesterase to differentiate pleural exudates and transudates.