A seroma is a benign collection of fluid that sometimes develops after surgery or an injury. This fluid consists of blood plasma from ruptured blood vessels and inflammatory fluid from damaged and dying cells. It can take weeks for a significant amount of fluid to accumulate and form a seroma, and the growth may persist for several months.


1. Causes

Seromas have several possible causes, though most appear after extensive surgical procedures. While seromas can form after minor surgery, they are more common when a surgeon removes or disrupts lots of tissue. Seromas may also form after improper or early suture removal. Aside from procedures, injuries that trigger swelling can also lead to seromas.

operating room hands Shannon Fagan / Getty Images


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