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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hannan Javed, M.D.[2], Zahir Ali Shaikh, MD[3], Raviteja Guddeti, M.B.B.S. [4], Carlos A Lopez, M.D. [5], Shyam Patel [6]; Grammar Reviewer: Natalie Harpenau, B.S.[7]
The differential diagnosis of acute myeloid leukemia includes a variety of other hematologic malignancies, specifically acute promyelocytic leukemia (APL), acute lymphoblastic leukemia (ALL), chronic myeloid leukemia (CML), and chronic lymphocytic leukemia (CLL). Each of these conditions has distinct causes and therapies. There is some overlap between the causes and laboratory abnormalities amongst these diseases.
ABBREVIATIONS
N/A: Not available, NL: Normal, FISH: Fluorescence in situ hybridization, PCR: Polymerase chain reaction, LDH: Lactate dehydrogenase, PUD: Peptic ulcer disease, EPO: Erythropoietin, LFTs: Liver function tests, RFTs: Renal function tests, LAP: Leukocyte alkaline phosphatase, LAD: Leukocyte alkaline dehydrgenase, WBCs: White blood cells.
| Myeloproliferative neoplasms (MPN) | Clinical manifestations | Diagnosis | Other features | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Symptoms | Physical examination | CBC & Peripheral smear | Bone marrow biopsy | Other investigations | |||||||||||
| WBCs | Hb | Plat- elets | |||||||||||||
| Leuko-cytes | Blasts | Left shift |
Baso- phils |
Eosino- phils |
Mono- cytes |
Others | |||||||||
| Chronic myeloid leukemia (CML), BCR-ABL1+[1][2] |
|
|
↑ | <2% | + | ↑ | ↑ | ↑ | N/A | ↓ | NL |
|
|
| |
| Chronic neutrophilic leukemia (CNL)[3][4][5] |
|
↑ | Minimal | + | NL | NL | NL | ↓ | ↓ |
|
|
| |||
| Polycythemia vera (PV)[6][7][8][9] |
|
|
NL or ↑ | None | - | ↑ or ↓ | NL or ↑ | NL | ↑↑ | NL |
|
| |||
| Primary myelofibrosis (PMF)[10][11][12][13] |
|
↓ | Erythroblasts | - | Absent | NL | NL | ↓ | ↓ |
|
| ||||
| Essential thrombocythemia (ET)[14][15][16] |
|
NL or ↑ |
None |
- |
↓ or absent |
NL |
NL |
|
↑↑ |
|
|||||
| Chronic eosinophilic leukemia, not otherwise specified (NOS)[17][18][19][20] |
|
↑ | Present | + | ↑ | ↑↑ | ↑ | ↓ | ↓ |
|
|
||||
| MPN, unclassifiable |
|
|
↑ | Variable | ± | ↑ or ↓ | ↑ or ↓ | ↑ or ↓ |
|
↓ | ↑ |
|
|
| |
| Mastocytosis[21][22][23][24] |
|
↑ | None | - | NL | ↑ | NL | ↓ | ↓ or ↑ |
|
| ||||
| Myeloid/lymphoid neoplasms with eosinophilia and rearrangement of PDGFRA, PDGFRB, or FGFR1, or with PCM1-JAK2[25][26][27][28] |
|
↑ | NL | - | NL | ↑ | ↑ |
|
NL | ↓ |
|
|
| ||
| B-lymphoblastic leukemia/lymphoma[29][30] | NL or ↑ | >25% | N/A | ↑ or ↓ | ↑ or ↓ | ↑ or ↓ | ↓ | ↓ |
|
| |||||
| Myelodysplastic syndromes (MDS)[31][32] |
↓ | Variable | - | ↓ | ↓ | ↓ |
|
↓ | ↓ |
|
| ||||
| Acute myeloid leukemia (AML) and related neoplasms[33][34] |
|
|
NL or ↑ | ↑ | N/A | ↑ or ↓ | ↑ or ↓ | ↑ or ↓ |
|
↓ | ↓ |
with dysplasia |
| ||
| Blastic plasmacytoid dendritic cell neoplasm[35][36][37][38] |
|
|
NL | ↑ | NL | NL | NL | ↓ | ↓ |
|
| ||||
| Myelodysplastic /myeloproliferative neoplasms (MDS/MPN) |
Chronic myelomonocytic leukemia (CMML)[39] |
|
↑ | < 20% | NL | ↑ | ↑↑ |
|
↓ | ↓ |
|
| |||
| Atypical chronic myeloid leukemia (aCML), BCR-ABL1-[42][43] |
|
|
↑ | <20% | + | <2% of WBCs | N/A | N/A |
|
↓ | ↓ |
|
|||
| Juvenile myelomonocytic leukemia (JMML)[44][45] |
|
↑ | ↑ | N/A | N/A | N/A | ↑ | ↓ | ↓ |
|
| ||||
| MDS/MPN with ring sideroblasts and thrombocytosis (MDS/MPN-RS-T)[46][47][48] |
|
|
NL or ↑ | NL | - | NL | N/A | N/A | ↓ | ↑ |
|
| |||
| T-lymphoblastic leukemia/ lymphoma |
T-lymphoblastic leukemia/ lymphoma[49][50][51] |
|
↑ | >25% blasts (Leukemia) | ± | ↑ or ↓ | ↑ or ↓ | ↑ or ↓ |
|
↓ | ↓ |
|
|||
| Provisional entity: Natural killer (NK) cell lymphoblastic leukemia/lymph[52] |
|
↑ | ↑ | ± | ↑ or ↓ | ↑ or ↓ | ↑ or ↓ |
|
↓ | ↓ |
|
||||
| Provisional entity: Early T-cell precursor lymphoblastic leukemia[53][54] |
|
↑ | ↑ | ± | ↑ or ↓ | ↑ or ↓ | ↑ or ↓ |
|
↓ | ↓ |
|
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