Hey there,
We are not for certain what it is at this moment. We have to wait. Your friend will go to the doctor, and find out if he has Cancer or not. I had a similar scare myself, with my own life. I had to play the waiting game, and the news came back positive. The not knowing is really the scary part. You will make it through this. Be there for your friend, and keep yourself grounded. I know that you can make it through this without drinking. The what if? will only cause anxiety and stress. Keep posting as much as you need to. We are here for you.