What is bone marrow infiltration?
Makes no sense. The only way to know there is bone marrow “infiltration” with anything is to do a bone marrow biopsy and aspirate. No peripheral blood test can discern this. And what is your marrow supposed to be infiltrated with? Your history – as provided – is only trauma to the coccyx. That would cause no bone marrow disease. Unless there is more to your history than we are given. Of course your doctor is the one to explain this very strange report.