I am concerned for my brother, who has Hairy Cell Leukemia. Was diagnosed in November. This is him in the picture on my profile. He is 40 years old. He means the world to me. He is already showing enough signs to warrant chemotherapy. He will probably be starting this soon. Can anyone out there tell me any information on this cancer and their experiences with this disease. I would sure appreciate it. From what I've been told, this is a slow growing cancer and is treatable, but I'm worried that he is probably gonna have to already begin chemo and and was just diagnosed in December. Does this mean he's had it already for a long time and didn't know it? Is that possible. Thank you for your feedback.