問題詳情

31.關於chronic myelomonocytic leukemia的檢驗數據,下列敘述何者錯誤?
(A)周邊血中有持續性monocytosis,超過1.0 × 109/L,且骨髓中blast cells > 20%
(B)周邊血中WBC 數目偏高,甚至可能超過100 × 109/L
(C)沒有發生BCR-ABL1 translocation
(D)常見TET2, ASXL1 基因異常

參考答案

答案:A
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用户評論

【用戶】Yuuu

【年級】高三下

【評論內容】(A) 周邊血中有持續性monocytosis,超過1.0 × 109/L,且骨髓中blast cells > 20%   <20%

【用戶】7you

【年級】國一下

【評論內容】記得Acute 和 chronic leukemia 重要區分是 20% blast : acute leukemia >20% blast  ;反之所以 (A) 周邊血中有持續性monocytosis,超過1.0 × 109/L,且骨髓中blast cells > 20% >>>直接破題BCR-ABL1 translocation >>for CML補充CMMoL診斷標準 :Persistent peripheral blood monocytosis with counts >1x109/LNo Philadelphia chromosome or BCR-ABL1 fusion geneNo rearrangement of PDGFRA or PDGFRB gene<20% myeloblasts, monoblasts and promonocytes in peripheral blood or bone marrowDysplasia in one or more of the myeloid lineages; if myelodysplasia is absent or minimal then a diagnosis of CMML can be made if other requirements are met and:A molecular genetic abnormality is present in haematopoietic cells, orMonocytosis present for ≥3 months and other causes of monocytosis have been ruled outCMMoL基因變異 : The most common found are the 8+, −7/del (7q) and structural 12p abnormalities.TET2 Mutations gene  : 40–50%KRAS and NRAS mutate : 25–40% Mutations in transcription factors such as RUNX1, CEBPA, NPM1 and WT1 : 30%Jak2 V617F mutation : 10% CBL Mutations : 5–18% https://en.wikipedia.org/wiki/Chronic_myelomonocytic_leukemia