Which type of stroke is characterized by bleeding in the brain?

The type of stroke characterized by bleeding in the brain is called a hemorrhagic stroke. This occurs when a blood vessel in the brain ruptures, leading to the accumulation of blood in or around the brain tissue. The presence of blood in these areas can cause increased intracranial pressure and damage to the surrounding brain cells, resulting in neurological deficits.

There are generally two main types of strokes: ischemic and hemorrhagic. Ischemic strokes occur due to a blockage preventing blood flow to the brain, often due to a blood clot. Transient ischemic attacks (TIAs), sometimes known as "mini-strokes," involve temporary disruptions in blood flow and usually result in short-lived symptoms. A cerebral vascular accident (CVA) is a broad term that can refer to both ischemic and hemorrhagic strokes, thus not specifically indicating the bleeding aspect.

Understanding the distinctions between these types of strokes is crucial in interventional radiology, as the treatment protocols and interventions differ considerably. In a hemorrhagic stroke, for instance, interventions may focus on controlling the bleeding and relieving pressure in the brain, contrasting with an ischemic stroke, where reestablishing blood flow is the primary concern.