Aggressive Stage III

I have a close friend who just found out he has brain cancer. He is a 33 year old male. He only started showing symptoms within the past month or so. It started off with numbness in his legs, then sudden immobility, and something he described as brain zaps. He finally decided on Wednesday it was time to go to the hospital when his speech began to slur. Early test results showed a lemon sized mass on his frontal lobe. Friday morning he went into surgery. The news was not good. The tumor was cancerous and was classified as Stage 3 aggressive. He was sent home yesterday and will be staring chemotherapy and radiation.

I would like to know how serious this situation is and what the survival rate is for this specific type of Cancer. I realize that everyone’s' cancer is different, so I guess I am just looking for a general response. Thank you for taking the time to read this.