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General Aspects of Childhood Leukemia

1

 

Paul Imbach

 

Contents

1.1

Definition and General Characteristics ...............................................................................

1

1.2

Incidence.............................................................................................................................

2

1.3

Etiology and Predisposing Factors......................................................................................

2

 

1.3.1

Genetics...................................................................................................................

2

 

1.3.2

Ionizing Radiation...................................................................................................

2

 

1.3.3

Chemicals and Drugs ..............................................................................................

3

 

1.3.4

Infection ..................................................................................................................

3

 

1.3.5

Immunodeficiency...................................................................................................

3

 

1.3.6

Socioeconomic Situation.........................................................................................

3

1.4

Pathogenesis........................................................................................................................

3

 

1.4.1

Molecular Pathogenesis...........................................................................................

4

 

1.4.2 Minimal Residual Disease (MRD)..........................................................................

4

1.1Definition and General Characteristics

Uncontrolled proliferation of immature and abnormal white blood cell precursors of varying hematopoietic lineage and aberrant differentiation which results in death within 1–6 months without treatment

The disorder usually originates in the bone marrow, where normal blood cells are replaced by leukemic cells

Morphological, immunological, cytogenetic, biochemical, and molecular genetic factors characterize different subtypes which display various responses to treatment

Abbreviations

ALL: acute lymphoblastic leukemia (Chap. 2)

AML: acute myeloid leukemia (Chap. 3)

CML: chronic myelogenous leukemia (Chap. 4)

AUL: acute undifferentiated and acute mixed lineage leukemia (AMLL)

P. Imbach et al. (eds.), Pediatric Oncology,

1

DOI 10.1007/978-3-642-20359-6_1, © Springer-Verlag Berlin Heidelberg 2011

 

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