It is difficult to put a time on this situation as it can change so rapidly. But rowanwitch has explained it very well. My heart really goes out to the parents of this young lad. I held my son as he died of brain cancer just three days before his 21st birthday. It is a devastating time they are going through and one that they may never really come to terms with. They will need a lot of support from friends and family, whether he pulls through or not. Sadly, too often friends stay away, sometimes because they think they will not be able to find the right words to say. But it is the company, the not being alone, the fact that someone wants to share in the worry, the sadness and wants to try to ease the "lost" feeling, that makes a difference. I really hope all turns to the better for this young lad and his family. Good to know they have a friend in you who cares.