A 58-yr-old woman is described in whom light and electron microscopic studies of bone marrow revealed the typical features of type I dyserythropoietic anemia. This form of anemia may be first diagnosed late in life, and caution should be exerted to avoid its confusion with preleukemia or erythroleukemia.

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© 1974 by American Society of Hematology, Inc.
1974
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