Diamond-Blackfan anemia differential diagnosis
Overview
Diamond-Blackfan Anemia must be differentiated from other diseases that cause anemia and bone marrow failure such as Aplastic anemia, Fanconi anemia, Transient Erythroblastopenia of Childhood, Shwachman-Diamond syndrome, Pearson syndrome, Dyskeratosis congenita, Cartilage-hair hypoplasia, Congenital amegakaryocytic thrombocytopenia, Infections: Parvovirus B19, HIV, Viral hepatitis, Drugs, and toxins (eg. antileptic drugs, azathioprine), Immune-mediated disorders( eg Thymoma, Myasthenia Gravis, SLE).
Dimond-Blackfan anemia differential diagnosis
DBA should be differentiated from other bone marrow failure diseases and anemia.
- Aplastic anemia
- Fanconi anemia is a bone marrow failure syndrome, present with pancytopenia, and physical abnormalities usually present within the first decade of life.
- Transient Erythroblastopenia of Childhood is an acquired anemia usually (over 80%) presents at one year of age, while DBA usually (90%) presents before one year of age.[1]
- Shwachman-Diamond syndrome (SDS) is a clinical syndrome characterized by exocrine pancreatic dysfunction with malabsorption, single or multi-lineage cytopenia, growth failure, bone abnormality, and susceptibility to myelodysplastic syndrome, and AML[2][3]
- Pearson syndrome is an inherited mDNA mutation characterized by sideroblastic anemia of childhood, exocrine pancreatic failure, liver failure, renal tubular defects, and pancytopenia. Death generally occurs in infancy due to liver failure.
- Dyskeratosis congenita (DC) is an inheretied disorder with the classic triad of lacy reticular pigmentation of the upper chest and/or neck, dysplastic nails, and oral leukoplakia. These patients have an increased risk of MDS, BMF, or AML. [2]
- Cartilage-hair hypoplasia (CHH): It is an autosomal recessive inherited disorder characterized by anemia, macrocytosis, defective T cell-mediated immune response, short tubular bone, and fine sparse blond hair.
- Congenital amegakaryocytic thrombocytopenia (CAMT) usually presents at birth or in infancy with severe thrombocytopenia, petechiae, and/or intracranial or intestinal mucosal bleeding. In childhood, these patients may develop pancytopenia, MDS, or leukemia.
- Infections: Parvovirus B19, HIV, Viral hepatitis
- Drugs and toxins (eg. antileptic drugs, azathioprine)[4]
- Immune-mediated disorders( eg Thymoma, Myasthenia Gravis, SLE)
Differential diagnosis of Anemia
| Disease | Genetics | Clinical manifestation | Lab findings | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| History | Symptoms | Signs | Hemolysis | Intrinsic/
Extrinsic |
Hb concentration | MCV | RDW | Reticulocytosis | Haptoglobin levels | Hepcidin | Iron studies | Specific finding on blood smear | ||||||
| Serum iron | Serum Tfr level | Transferrin or TIBC | Ferritin | Transferrin saturation | ||||||||||||||
| Iron deficiency anemia[5] | β |
|
β | β | Hypochromic | Microcytic | β | Nl or β | Nl | Nl | β | β | β | β | βββ |
| ||
| Iron deficiency anemia (early phase)[6] | β |
|
β | β | Normochromic | Normocytic | β | β | Nl | Nl | β | β | β | β | β |
| ||
| Lead poisoning[7] | β |
|
|
|
β | β | Hypochromic | Microcytic | Nl | Nl or β | Nl | Nl | Nl to β | Nl | Nl | Nl to β | β | |
| Sideroblastic anemia[8] |
|
|
|
|
β | β | Hypochromic | Microcytic | Nl | Nl or β | Nl | Nl | β | Nl | Nl to β | β | β |
|
| Disease | Genetics | History | Symptoms | Signs | Hemolysis | Intrinsic/
Extrinsic |
Hb concentration | MCV | RDW | Reticulocytosis | Haptoglobin levels | Hepcidin | Serum iron | Serum Tfr level | IBC | Ferritin | Transferrin saturation | Specific finding on blood smear |
| Anemia of chronic disease[9] | β | β | β | β | Hypochromic | Microcytic | Nl | Nl or β | Nl | β | β | Nl | β | β | β | NA | ||
| Thalassemia[10] | Ξ±-thalassemia
|
|
Ξ±-thalassemia
|
β | β | Hypochromic | Microcytic | Nl |
|
Nl | Nl | Nl to β | Nl | Nl | β | Nl to β |
| |
| G6pd deficiency[11] |
|
+ | Intrinsic | Normochromic | Normocytic | β | β but usually causes resolution within 4-7 days | β | β | Nl to β | Nl | β | β | β |
| |||
| Pyruvate kinase deficiency[12] |
|
|
|
+ | Intrinsic | Normochromic | Normocytic | β | β | β | Nl | β | Nl | Nl | β | β |
| |
| Disease | Genetics | History | Symptoms | Signs | Hemolysis | Intrinsic/
Extrinsic |
Hb concentration | MCV | RDW | Reticulocytosis | Haptoglobin levels | Hepcidin | Serum iron | Serum Tfr level | IBC | Ferritin | Transferrin saturation | Specific finding on blood smear |
| Sickle cell anemia[13] |
|
|
+ | Intrinsic | Normochromic | Normocytic | β | β | β | Nl or moderately β | Nl | Nl | Nl or moderately β | β | Nl |
| ||
| HbC disease[14] |
|
|
+ | Intrinsic | Normochromic | Normocytic | β | β | β | Nl | Nl | Nl | Nl | β | β |
| ||
| Paroxysmal nocturnal hemoglobinuria[15][16] |
|
|
|
|
+ | Intrinsic | Normochromic | Normocytic | β | β | β | Nl | β | Nl | β | β | β | NA |
| Hereditary spherocytosis[17] |
|
|
+ | Intrinsic | Normochromic | Normocytic | β | β | β | Nl | β | Nl | β | Nl | β |
| ||
| Disease | Genetics | History | Symptoms | Signs | Hemolysis | Intrinsic/
Extrinsic |
Hb concentration | MCV | RDW | Reticulocytosis | Haptoglobin levels | Hepcidin | Serum iron | Serum Tfr level | IBC | Ferritin | Transferrin saturation | Specific finding on blood smear |
| Microangiopathic hemolytic anemia[18][19] | β | Associated with |
|
+ | Extrinsic | Normochromic | Normocytic | β | β | β | Nl | β | Nl | β | β | β |
| |
| Macroangiopathic hemolytic anemia[20] | Associated with | + | Extrinsic | Normochromic | Normocytic | β | β | β | Nl | β | Nl | β | β | β | ||||
| Autoimmune hemolytic anemia[21] | β | Associated with: |
|
|
+ | Extrinsic | Normochromic | Normocytic | β | β | β | Nl | β | Nl | β | β | β |
|
| Aplastic anemia[22] |
|
|
|
β | β | Normochromic | Normocytic | β | β | Nl | Nl | β | β | Nl | β | β |
| |
| Disease | Genetics | History | Symptoms | Signs | Hemolysis | Intrinsic/
Extrinsic |
Hb concentration | MCV | RDW | Reticulocytosis | Haptoglobin levels | Hepcidin | Serum iron | Serum Tfr level | IBC | Ferritin | Transferrin saturation | Specific finding on blood smear |
| Folate deficiency[23] |
|
|
|
|
β | β | Anisochromic | Macrocytic | β | β | Nl | Nl | β | β | β | β | β |
|
| Vitamin B12 deficiency[24] |
|
|
|
β | β | Anisochromic | Macrocytic | β | β | Nl | Nl | β | β | β | β | β | ||
| Orotic aciduria[25] |
|
|
|
|
β | β | Anisochromic | Macrocytic | β | β | Nl | Nl | β | β | β | β | β | NA |
| Fanconi anemia[26] |
|
|
|
β | β | Anisochromic | Macrocytic | β | β | Nl | Nl | β | β | β | β | β | ||
| Disease | Genetics | History | Symptoms | Signs | Hemolysis | Intrinsic/
Extrinsic |
Hb concentration | MCV | RDW | Reticulocytosis | Haptoglobin levels | Hepcidin | Serum iron | Serum Tfr level | IBC | Ferritin | Transferrin saturation | Specific finding on blood smear |
| Diamond-Blackfan anemia[27] | Mutations in:
|
|
|
|
β | β | Anisochromic | Macrocytic | Nl | β | Nl | Nl | β | β | β | β | β | NA |
| Infections[28] | β | Associated with | + | Extrinsic | Normochromic | Normocytic | β | β | β | Nl | Nl | Nl | β | β | β |
| ||
| Chronic kidney disease[29] | β | β | β | Normochromic | Normocytic | β | Nl/β | Nl | β | β | β | β | β | β | Nl | |||
| Liver disease[30] | β |
|
|
β | β | Anisochromic | Macrocytic | β | β | Nl | Nl | β | β | β | β | β | ||
| Alcoholism[31] | β |
|
β | β | Anisochromic | Macrocytic | β | β | Nl | Nl | β | β | β | β | β | |||
| Disease | Genetics | History | Symptoms | Signs | Hemolysis | Intrinsic/
Extrinsic |
Hb concentration | MCV | RDW | Reticulocytosis | Haptoglobin levels | Hepcidin | Serum iron | Serum Tfr level | IBC | Ferritin | Transferrin saturation | Specific finding on blood smear |
References
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