brother has oligodendro glioma, x 10 years, temador, radiation, repeated temador, ivchem and temado x 1 yr, went to duke for novolamab/auto vaccine trial with surgical removal , continued nivo until progression of tumor, just off program with progression...the next week had 4th episode of mental status changes, for shich they previously gave steroids, first occurance was immediately post op nov 2016. they say it is seizure activity ,never did eeg, finally will do this week...psuedomeningocele was initially the cause...now they are in denial...he is finishing steroid taper (finally received steroids with 2nd trip to ER when he was unable to speak and was dragging his R leg and could not use R arm.) now his Left temple is appearing sunk in( face edema which increases with the confusion remains) iswhat is the cause...is unilateral or I would think it was dehydration.