contusion (kon-tu´shun)

Any mechanical injury (usually caused by a blow) resulting in hemorrhage beneath unbroken skin. See also bruise. [L. contusio, a bruising]
brain c. a bruising, usually of the surface, of the brain with extravasation of blood but without rupture of the pia-arachnoid; healing results in a superficial depressed sclerotic area, possibly with incorporated meninges. See also brain cicatrix.
scalp c. intracutaneous or subcutaneous extravasation of blood without gross disruption of skin.


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