There are many types of bone marrow cancer like acute myeloid leukemia, chronic myeloid leukemia, plasma cell cancer, acute lymphocytic leukemia, chronic lymphocytic leukemia etc. The risks associated with the bone marrow cancer depends on the type of the bone marrow cancer. The bone marrow cancers are not fatal, If diagnosed in early stages of disease progression, with proper medical treatment and follow-ups. For more details, check this link: http://www.buzzle.com/articles/bone-marrow-cancer-symptoms.html
Bone marrow cancer includes several types of cancer such as multiple myeloma and leukemias. Depending on the exact type of cancer, bone marrow cancer can be treated. However, the average length of life after treatment is about 4.5 years in the case of multiple myeloma and 5 years or more for most leukemias.
It depends on the stage of the bone marrow cancer. In stage 1 for instance, the survival rate is between 71 and 88%. In stage 4, the rate drops to 19 to 49%. It can be fatal, but can also be highly treatable if caught early.