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(465) This is a large swelling caused by haemorrhage beneath the skin into the subcutaneous tissue or muscles. (Fig.10-15). It is caused by fighting or external damage that ruptures a small blood vessel. The common sites are the ears and flanks. They can be confused with abscesses and to differentiate between them it is necessary to use a needle and syringe and sample the fluid contents. Most haematomas stop bleeding and the body defences gradually remove the serum and the blood clot. Occasionally they become infected to form an abscess, and need to be dealt with as such.


Haematoma of the ear, note the swelling.

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