- Another name for a bruise. What is a bruise ? A bruise, or contusion, is caused when blood vessels are damaged or broken as the result of a blow to the skin (be it bumping against something or hitting yourself with a hammer). The raised area of a bump or bruise results from blood leaking from these injured blood vessels into the tissues as well as from the bodys response to the injury. A purplish, flat bruise that occurs when blood leaks out into the top layers of skin is referred to as an ecchymosis.
* * *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.
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* * *n.2. any of various degrees of bruising of the brain (cerebral contusion), resulting from head injury or surgery. Clinical signs range from concussion to coma, reflecting the severity of the trauma.
* * *con·tu·sion (kən-tooґzhən) [L. contusio, from contundere to bruise] an injury of a part without a break in the skin and with a subcutaneous hemorrhage. Called also bruise.
Medical dictionary. 2011.