Haematoma
Haematoma
Haematoma (pronounced: /hiːməˈtoʊmə/), also spelled hematoma, is a localized collection of blood outside the blood vessels, usually in liquid form within the tissue. This blood collection can occur anywhere in the body and varies in severity from minor to life-threatening.
Etymology
The term "haematoma" is derived from the Greek words haima meaning "blood", and -oma meaning "mass or collection".
Types of Haematoma
There are several types of haematomas, including:
- Subdural haematoma: This occurs when blood collects on the brain's surface beneath the skull.
- Epidural haematoma: This is when bleeding occurs between the tough outer membrane covering the brain (dura mater) and the skull.
- Subungual haematoma: This is a type of haematoma that occurs beneath the nail.
- Intracranial haematoma: This is when blood collects within the skull (cranium).
- Liver haematoma: This is a collection of blood within the liver.
Related Terms
- Bruise: A bruise, or contusion, occurs when an area of skin has suffered trauma.
- Hemorrhage: Hemorrhage is a severe, potentially life-threatening, loss of blood.
- Coagulation: Coagulation is the process by which blood changes from a liquid to a gel, forming a clot.
See Also
External links
- Medical encyclopedia article on Haematoma
- Wikipedia's article - Haematoma
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