August 1, 2023

Edema is the accumulation of clear, water-like fluid inside tissue. It develops when a type of fluid called serum leaks out of blood vessels and into the surrounding tissue. Common causes include congestive heart failure, liver disease, kidney disease, blood clots in large veins, and medical conditions associated with decreased protein levels in the blood. Localized edema (involving only a small area of the body) may be caused by inflammation, physical trauma, infection, surgery, or radiation therapy. This change may also be seen in the tissue surrounding a tumour.


About this article

Doctors wrote this article to help you read and understand your pathology report. Contact us if you have questions about this article or your pathology report. For a complete introduction to your pathology report, read this article.

Related articles on MyPathologyReport

Acute inflammation
Chronic inflammation

Other helpful resources

Atlas of pathology
A+ A A-

Did you find this article helpful?