ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY
Bruised leg. Close-up of a blue and red haematoma (or bruise) under the skin (subcutaneous) of a patient's thigh. A haematoma is a localised collection of blood caused by bleeding from a ruptured blood vessel. Most haematomas disappear without treatment after several days.
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