13.某50歲男性因上腹疼痛至醫院求診，經診斷為消化性潰瘍，同時血液常規檢查發現Hb 11.7 g/dL、MCV 92.5fL、血小板475,000/μL、WBC 158,420/μL；WBC分類為blast 1%、promyelocyte 6.5%、myelocyte 16%、 metamyelocyte 14.5%、basophil 0.5%、eosinophil 1.5%、band neutrophil 23%及segmented neutrophil31%、monocyte 4.5%、lymphocyte 1.5%、LAP score 17；則推測最可能罹患下列何種疾病？
(A)Myelodysplastic syndrome
(B)Leukemoid reaction
(C)Chronic myeloid leukemia
(D)Acute myeloid leukemia