MDS: clonal, ineffec hematopoe, PanCytoPenia, AML, >70y, 3 stages (initial due to : toxin, radi, Down, Fanconi, Neurofibro T1) /
-- -- -- ealy (loss diff, inc apop, inc BM cellularity) / late (inc cell proliferation, dec apop, inc blasts, transition to AML