What is the major change the WHO made to the classifications of the myelodysplastic syndromes?
a. Dropped the 5q syndrome from myleodysplastic syndromes
b. Reduced the percentage of blasts required for the diagnosis of acute myeloid leukemia from 30% to 20%
c. Recognized acute myeloid leukemia as one of the myleodysplastic syndromes
d. Created a new classification placing refractory anemia and the myeloproliferative disorders together
ANS: B
The WHO classification for myelodysplastic syndromes reduced the percent blasts required for the diagnosis of acute myeloid leukemia from 30% to 20%.
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