[Hyperthyroidism as a cause of chronic anemia].

Hyperthyroidism like cause of anemia is rare, normally in this pathology there is a increase of the erythropoiesis secondary to the cellular hypoxia causes by the increase of the basal metabolism. We have revised the histories of diagnostical hyperthyroidism in our center, which presented anemia, we found four cases which presented anemia. All of them were women with associated heart disease. It is believe that this anemia is related with the patients age and the evolution time of the hyperthyroidism. We concluded after the bone marrow studies that the anemia of hyperthyroidism is a anemia of chronic disease with light reactive plasmocytosis.