How would you best describe a hematoma?

A hematoma is best described as a localized collection of blood outside of blood vessels, typically due to injury or trauma that causes blood to leak out into surrounding tissues. This often occurs as a result of serious damage, where blood vessels are broken and blood accumulates in the surrounding area.

The term "tumor" might imply an abnormal growth or neoplasm, but in this context, it refers to the mass of blood that has formed, highlighting the serious nature of the injury. While it is indeed a blood-filled structure, the key reason for identifying a hematoma in this way is the underlying cause: significant impact or damage that leads to the accumulation of blood. Recognizing hematomas as a consequence of trauma is crucial for understanding their nature and potential complications, such as pressure on surrounding tissues or infection.

Other descriptions, such as a small bruise from mild impact or a temporary swelling, do not capture the severity or implications of a hematoma accurately. An infection also does not characterize a hematoma, as it is primarily a result of blood accumulation rather than an infectious process.