,The cortical surface was then covered with Surgicel and the dura placed over the surface of the brain after coagulation of the dural edges, the freeze dried fascia, which had been used at the time of the 1st surgery was replaced over the surface of the brain with additional areas of cortical exposure covered with a DuraGuard. 
,The cortical surface was then covered with Surgicel and the dura placed over the surface of the brain after coagulation of the dural edges , the freeze dried fascia , which had been used at the time of the 1st surgery was replaced over the surface of the brain with additional areas of cortical exposure covered with a DuraGuard .