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| Hematoma Classification and external resources |
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| Hematoma on thigh, 6 days after a fall down stairs, 150ml of blood drained a few days later | |
| ICD-10 | T14.0 |
| DiseasesDB | 5487 |
| MeSH | D006406 |
A hematoma, or haematoma, is a collection of blood outside the blood vessels,[1] generally the result of hemorrhage, or more specifically, internal bleeding.
It is not to be confused with hemangioma which is an abnormal build up of blood vessels in the skin or internal organs.
Contents |
Presentation
Hematomas exist as bruises (ecchymoses), but can also develop in organs. Some hematomas form into welt-like formations that are hard to the touch. Such a formation is a sac of blood that the body creates to keep internal bleeding to a minimum. In most cases the sac of blood eventually dissolves, however, in some cases they may continue to grow or show no change. If the sac of blood does not disappear, then it may need to be surgically removed.
Hematomas can gradually migrate, as the effused cells and pigment move in the connective tissue. For example, a patient who injures the base of his thumb might cause a hematoma, which will slowly move all through the finger within a week. Gravity is the main determinant of this process.
Hematomas on articulations can reduce mobility of a member and present roughly the same symptoms as a fracture.
Types
- Head/brain:
- Subgaleal hematoma — between the galea aponeurosis and periosteum
- Cephalhematoma — between the periosteum and skull
- Epidural hematoma — between the skull and dura mater
- Subdural hematoma — between the dura mater and arachnoid mater
- Subarachnoid hematoma — between the arachnoid mater and pia mater (the subarachnoid space)
- Othematoma — between the skin and the layers of cartilage of the ear.
Degrees of hematoma
- Hematoma - bruise
- Petechiae - small pinpoint hematomas less than 3 mm in diameter
- Purpura - (purple) a bruise about 1 cm in diameter, generally round in shape
- Ecchymoses or eccymosis - hematoma greater than 3 mm
Sport injuries
A common sport-related haematoma of the muscle is known as a 'cork', most commonly a "cork thigh" (quadriceps), but also calf and arm, in which the muscle is compressed against the underlying bone. Rupture of the muscle causes haematoma, resulting in swelling.[2]
References
- ^ "utah.edu".
- ^ Quadricept Contusion (Cork Thigh), Sports Medicine Australia, accessed 23 August 2008
External links
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Wikipedia content modification information:
- This page was last modified on 24 September 2008, at 11:02.
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