ell . ▁At ▁the ▁time ▁of ▁this ▁announ cement , ▁the ▁cancer ▁that ▁would ▁kill ▁B iden ▁in ▁ 2 0 1 5 ▁had ▁been ▁diagn osed ▁but ▁was ▁in ▁rem ission , ▁although ▁this ▁information ▁was ▁not ▁public ▁at ▁the ▁time . ▁ ▁Ill ness ▁and ▁death ▁ ▁For ▁the ▁final ▁few ▁years ▁of ▁his ▁life , ▁B iden ▁suffered ▁from ▁a ▁brain ▁tum or . ▁In ▁May ▁ 2 0 1 0 , ▁he ▁was ▁admitted ▁to ▁Christ iana ▁Hospital ▁in ▁New ark , ▁Del aware , ▁after ▁compla ining ▁of ▁a ▁head ache , ▁num b ness , ▁and ▁par al ysis . ▁Official s ▁stated ▁that ▁he ▁had ▁suffered ▁a ▁" m ild ▁stroke ". ▁Later ▁that ▁month , ▁B iden ▁was ▁transferred ▁to ▁Thomas ▁Jefferson ▁University ▁Hospital ▁in ▁Philadelphia ▁and ▁kept ▁for ▁observation ▁for ▁several ▁days . ▁ ▁In ▁August ▁ 2 0 1 3 , ▁B iden ▁was ▁admitted ▁to ▁the ▁University ▁of ▁Texas ▁MD ▁Anderson ▁Can cer ▁Center ▁in ▁Houston ▁and ▁diagn osed ▁with ▁brain ▁cancer , ▁after ▁experien cing ▁what ▁White ▁House ▁officials ▁called ▁" an ▁episode ▁of ▁dis orientation ▁and ▁weak ness ." ▁ ▁A ▁les ion ▁was ▁removed ▁at ▁that ▁time . ▁B iden ▁had ▁radiation ▁and ▁chem other apy ▁treat ments ▁and ▁the ▁cancer ▁remained ▁stable . ▁ ▁On ▁May ▁ 2 0 , ▁ 2 0 1 5 , ▁he ▁was ▁admitted ▁to ▁Walter ▁Re ed ▁National ▁Military ▁Medical ▁Center ▁in ▁Beth es da , ▁Maryland , ▁because ▁of ▁a ▁rec