Hematology

Abstract
ALTHOUGH anemia is by no means all of hematology, it is often considered its most important phase. This year's review will be limited to a more or less personalized discussion of this subject.General Considerations Classification The terms "secondary anemia" and "primary anemia" must by now be considered as clearly outmoded. Since anemia is always a symptom of some underlying disorder, all anemias are necessarily secondary. If this is the case, there is no point in discriminating between primary and secondary cases. The classification of anemia on the basis of color index, cell volume or cell diameter, or all three, . . .