Pseudoreticulocytosis in a case of myelodysplastic syndrome

A patient with normocytic anemia and marked and persistent reticulocytosis is presented. Causes responsible for blood loss and hemolytic diseases were excluded and? after bone marrow examination, myelodysplastic syndrome (ref ractory anemia) was diagnosed. In vitro reticulocyte survival studies sugge sted that reticulocytosis was a consequence of delayed maturation of the re ticulocytes, Pseudoreticulocytosis may be an unusual presentation of myelod ysplastic syndromes, because only 4 patients with such a finding have previ ously been reported.