Hematologic disease

Hematologic disease
Hematologic disease
Specialty	Hematology

Hematologic diseases are disorders which primarily affect the blood. Hematology includes the study of these disorders.

Myeloid

Hemoglobinopathies (congenital abnormality of the hemoglobin molecule or of the rate of hemoglobin synthesis)
Anemias (lack of red blood cells or hemoglobin)
- Iron deficiency anemia
- Megaloblastic anemia
  - Vitamin B₁₂ deficiency
    - Pernicious anemia
  - Folate deficiency
- Hemolytic anemias (destruction of red blood cells)
  - Genetic disorders of RBC membrane
  - Genetic disorders of RBC metabolism
    - Glucose-6-phosphate dehydrogenase deficiency (G6PD)
    - Pyruvate kinase deficiency
  - Immune mediated hemolytic anemia (direct Coombs test is positive)
    - Autoimmune hemolytic anemia
      - Warm antibody autoimmune hemolytic anemia
        Idiopathic
        
        Systemic lupus erythematosus (SLE)
        
        Evans' syndrome (antiplatelet antibodies and hemolytic antibodies)
      - Cold autoimmune hemolytic anemia
        Cold agglutinin disease
        
        Paroxysmal cold hemoglobinuria (rare)
        
        Infectious mononucleosis
    - Alloimmune hemolytic anemia
      - Hemolytic disease of the newborn (HDN)
        Rh disease (Rh D)
        
        ABO hemolytic disease of the newborn
        
        Anti-Kell hemolytic disease of the newborn
        
        Rhesus c hemolytic disease of the newborn
        
        Rhesus E hemolytic disease of the newborn
        
        Other blood group incompatibility (RhC, Rhe, Kid, Duffy, MN, P and others)
    - Drug induced immune mediated hemolytic anemia
      - Penicillin (high dose)
      - Methyldopa
  - Hemoglobinopathies (where these is an unstable or crystalline hemoglobin)
  - Paroxysmal nocturnal hemoglobinuria (rare acquired clonal disorder of red blood cell surface proteins)
  - Direct physical damage to RBCs
    - Microangiopathic hemolytic anemia
    - Secondary to artificial heart valve(s)
- Aplastic anemia
  - Fanconi anemia
  - Diamond-Blackfan anemia (inherited pure red cell aplasia)
  - Acquired pure red cell aplasia
Decreased numbers of cells
- Myelodysplastic syndrome
- Myelofibrosis
- Neutropenia (decrease in the number of neutrophils)
- Agranulocytosis
- Glanzmann's thrombasthenia
- Thrombocytopenia (decrease in the number of platelets)
  - Idiopathic thrombocytopenic purpura (ITP)
  - Thrombotic thrombocytopenic purpura (TTP)
  - Heparin-induced thrombocytopenia (HIT)
Myeloproliferative disorders (Increased numbers of cells)
- Polycythemia vera (increase in the number of cells in general)
- Erythrocytosis (increase in the number of red blood cells)
- Leukocytosis (increase in the number of white blood cells)
- Thrombocytosis (increase in the number of platelets)
- Myeloproliferative disorder
Coagulopathies (disorders of bleeding and coagulation)
- Thrombocytosis
- Recurrent thrombosis
- Disseminated intravascular coagulation
- Disorders of clotting proteins
  - Hemophilia
    - Hemophilia A
    - Hemophilia B (also known as Christmas disease)
    - Hemophilia C
  - Von Willebrand disease
  - Disseminated intravascular coagulation
  - Protein S deficiency
  - Antiphospholipid syndrome
- Disorders of platelets

Hematological malignancies

Hematological malignancies
- Lymphomas
  - Hodgkin's disease
  - Non-Hodgkin's lymphoma{includes the next five entries}
- Myelomas
- Leukemias increased WBC
  - Acute lymphocytic leukemia (ALL)
  - Chronic lymphocytic leukemia (CLL){now included in theCLL/SCLL type NHL}
  - Acute myelogenous leukemia (AML)
  - Chronic Idiopathic Myleofibrosis (MF)
  - Chronic myelogenous leukemia (CML)
  - T-cell prolymphocytic leukemia (T-PLL)
  - B-cell prolymphocytic leukemia (B-PLL)
  - Chronic neutrophilic leukemia (CNL)
  - Hairy cell leukemia (HCL)
  - T-cell large granular lymphocyte leukemia (T-LGL)
  - Aggressive NK-cell leukemia

Miscellaneous

Hematological changes secondary to non-hematological disorders

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