My Lover Has A Stage 3 Cancerous Tumor In The

my lover has a stage 3 cancerous tumor in the frontal lobe. he has received 3 days of po chemotherapy and today was he 3rd day if iv chemo. all of this is consequtive. generally how sucessfull is this??
Is surgery ever sucessfull Dosen't the frontal lobe control thinking and reasoning as well as speach and emotions??