R Subdural Hematoma - stretches along the subdural space and extends underneath the falx in midline
Subdural Hematoma
Subdural hematoma's occur from tearing of bridging veins; hemorrhage accrues over a relatively slow period of time compared to epidural hematoma or subarachnoid hemorrhage; they commonly occur on both sides of the cranium; and typically present with headache and/or confusion.
They are more common in the elderly because brain atrophy (shrinkage) puts stress on the bridging veins, making them more susceptible to tearing.
Bridging veins penetrate the dura/arachnoid interface, enter the dura, and empty into the venous sinuses; it's classically reported that they can rupture as they cross through the dural border cell layer.