<P> Many medical conditions involve the dura mater . A subdural hematoma occurs when there is an abnormal collection of blood between the dura and the arachnoid , usually as a result of torn bridging veins secondary to head trauma . An epidural hematoma is a collection of blood between the dura and the inner surface of the skull , and is usually due to arterial bleeding . Intradural procedures , such as removal of a brain tumour , or treatment of trigeminal neuralgia via a microvascular decompression require that an incision is made to the dura mater . To achieve a watertight repair and avoid potential post-operative complications the dura is typically closed with sutures . In the event that there is a dural deficiency , a dural substitute may be used to replace this membrane . Small gaps in the dura can be covered with a surgical sealant film . </P>
<P> Many medical conditions involve the dura mater . A subdural hematoma occurs when there is an abnormal collection of blood between the dura and the arachnoid , usually as a result of torn bridging veins secondary to head trauma . An epidural hematoma is a collection of blood between the dura and the inner surface of the skull , and is usually due to arterial bleeding . Intradural procedures , such as removal of a brain tumour , or treatment of trigeminal neuralgia via a microvascular decompression require that an incision is made to the dura mater . To achieve a watertight repair and avoid potential post-operative complications the dura is typically closed with sutures . In the event that there is a dural deficiency , a dural substitute may be used to replace this membrane . Small gaps in the dura can be covered with a surgical sealant film . </P>
what is the term for a collection of blood located outside the dura mater
what is the term for a collection of blood located outside the dura mater
epidural hematoma
epidural hematoma