My wife was diagnosed with astrocytoma grade 3 in left temporal lobe in 2010. long story in short after surgery and radiation, chemo the tumor is back & now she is in deep coma for the last 6 weeks. her eyes are bulging out and bleeding. My question is whether this suffering can go on for months . I know this is her end but I'm not able to cope with her suffering. what is the maximum duration cancer patients bear this kind of coma.Please give me some kind of idea.......this is devastating for me & my 2 kids.