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Hi, Mom23.
For healthy adults, normal cellularity of the bone marrow is usually 100 minus the person's age. So, 20-year-old would have 80% cellularity and a 70-year-old might have only 30%. When disease is present, those numbers might be higher (hypercellularity) or lower (hypocellularity). I think the formula is somewhat different for children, but the hyper/hypo distinction is still made.
What disease or condition is your child being treated for? What does the doctor say about the significance of 50-60% cellularity in a 3-year-old?
Regards,
Ruth Cuadra
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Diagnosed AA 10/96, MDS/RA 6/98, MUD/BMT 10/6/98
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