<prompt> Least likely to be Pre-leukemic condition isParoxysmal nocturnal hemoglobinuriaParoxysmal cold hemoglobinuriaAplastic anemiaMyelodysplastc syndrome  <response>: Myelodysplastic syndrome refers to a range of blood disorders. They are cancersin which newly created blood cells in the bone marrow do not develop into healthy working blood cells. Myelodysplastic syndrome MDS has often been referred to as pre-leukemia or smoldering leukemia. Refer robbins 9e 