APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -A subdural hematoma (SDH) is a collection of blood below the inner layer of the dura but external to the brain and arachnoid membrane (see the images below). Subdural hematoma is the most common type of traumatic intracranial mass lesion.

Detailed explanation-2: -In a subdural hematoma, the blood seeps between the dura and the arachnoid layers. It collects inside the brain’s tough outer lining. This bleeding often comes from a blood vessel that breaks within the space around the brain. This most often happens because of a head injury.

Detailed explanation-3: -If you have a subdural hematoma, blood is leaking out of a torn vessel into a space below the dura mater, a membrane between the brain and the skull. Symptoms include ongoing headache, confusion and drowsiness, nausea and vomiting, slurred speech and changes in vision.

Detailed explanation-4: -A chronic subdural hematoma is an old clot of blood on the surface of the brain between dura and arachnoid membranes. These liquefied clots most often occur in patients aged 60 and older with brain atrophy.

Detailed explanation-5: -A subdural hematoma is most often the result of a severe head injury. This type of subdural hematoma is among the deadliest of all head injuries. The bleeding fills the brain area very rapidly, compressing brain tissue. This often results in brain injury and may lead to death.