I need to know the full history of your patient before I can tell you what it is. It sounds like your friend has lower respiratory tract
infection. This may be due to pneumonia
or cancer. If he has cancer, it is possible that the cancer is in late stage. This means it has spread throughout the body. At this stage it is very difficult to remove the cancer. However, dont lose hope there are always miracles happening. Just try your best and first of all find out the diagnosis. Wish you the best.