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Hi Karen,
I know that for bone marrow failure disorders, the BMB should be done on the long bones, as they have the most cells. In adults, this would typically be the pelvic bone. In the old days, they used the sternum! So, I don't know if I would count the spinal BMB for diagnosis of a bone marrow failure disease but more to ensure that the bc has not spread to the bones.
Some inherited forms of bone marrow failure, like Fanconi's Anemia, are associated with an increased risk of cancer.
So, there are a lot of things for your doctors to sort out before taking action, which unfortunately means more tests and waiting to ensure a proper diagnosis.
Enjoy your autumn day! It is still summer here in California. Best of luck!
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55 yo female, dx 9/08, AA/hypo-MDS, subclinical PNH, ATG/CsA 12/08, partial response. small trisomy 6 clone, low-dose cyclosporine dependent
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