A blood-filled swelling in the tissue is known as what?

A blood-filled swelling in the tissue is referred to as a hematoma. This condition occurs when blood leaks from damaged blood vessels and collects in the surrounding tissues, leading to a swelling. Hematomas can vary in size and can occur in various locations in the body, often as a result of trauma or injury.

Edema refers to a general swelling that is caused by the accumulation of fluid in the interstitial spaces of tissues, rather than blood. Petechiae are small red or purple spots on the skin caused by bleeding underneath, which do not form swollen areas like hematomas. An abscess is a localized collection of pus that typically results from an infection, and thus is characterized by a different type of fluid accumulation and is associated with inflammation rather than just blood. Understanding these definitions helps clarify why hematoma is specifically designated for blood-filled swellings.