Thirty-three patients with F AB-classified primary myelodysplastic syndrome (MDS) were investigated for in vitro growth of colony-forming units for myeloid precursors (CFU-C) and microscopic searching for internuclear bridging (INB). We found that 45% of MDS had INB was neglected in the past, and those with very low CFU-C count had a tendency towards worse prognosis. Combining low colony count and the absence of INB, we found that they had a higher acute leukemia transformation rate and that the changes might be conductive to the prognostic evaluation in MDS.
Thirty-three patients with F AB-classified primary myelodysplastic syndrome (MDS) were investigated for in vitro growth of colony-forming units for myeloid precursors (CFU-C) and microscopic searching for internuclear bridging (INB). We found that 45% of MDS had INB was neglected in the past, and those with very low CFU-C count had a tendency towards worse prognosis. Combining low colony count and the absence of INB, we found that they had a higher acute leukemia transformation rate and that the changes might be conductive to the prognostic evaluation in MDS.