Project cost management is primarily concerned with the cost of the resources needed to complete project activities. However, project cost management should also consider the effect of project decisions on the cost of using the project product. For example, limiting the number of design reviews may reduce the cost of the pro-
Arachnoid cysts are fluid-filled sacs that occur on the arachnoid membrane that covers the brain (intracranial) and the spinal cord (spinal). There are three membranes covering these parts of the central nervous system: the dura mater, arachnoid, and pia mater.
Though etiopathogenesis remains unclear, arachnoid pouching through a possibly congenital dural defect and enlargement of the cyst due to a one-way valve is the most accredited theory. In the setting of intractable back and leg pain our patient underwent CT and MR scans (figure).