Life expectancy for a Leukemia patient...?

What are the high and low life expectancies for a Leukemia patient... who doesn't know what type of Leukemia they have... and doesn't take treatment...?
Update: "I don't know. I bet a doctor would though. Why does this pateint know they have leukemia and is not seeking medical assistance? How about a court order?" She took an exam because she had a lot of bruises. She doesn't want to interrupt her life. What does a court order have to do with this?
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