Contusion is defined as which?

• A. Brain Bruise With Possible Bleeding And Swelling
• B. Mild TBI With Temporary Neurologic Dysfunction
• C. Brain Injury From External Force
• D. Trauma To Scalp, Skull, Or Brain

Answer: (A)

Contusion refers to a bruise of the brain tissue itself, typically from blunt head trauma, which can cause bleeding into the brain and swelling in the affected area. This description fits best because it specifies a bruise within the brain with possible hemorrhage and edema, reflecting localized parenchymal injury. The other options describe broader or different concepts: a concussion or mild traumatic brain injury implies temporary neurologic dysfunction without necessarily a focal brain bruise; a general brain injury from external force is too broad; and trauma to scalp, skull, or brain covers surface or non-parenchymal injuries and isn’t specific to a brain tissue bruise.