Hematology Flashcards
What is hematopoesis?
Formation of blood cells - bone marrow of vertebra, long bones, sternum, skull, ribs, and pelvis
What are the three types of liquid tumors?
- Hematopoesis
- Leukemia
- Lymphona - Hodgkin’s and non-hodgkin’s
What are the two things a stem cell can branch into?
- Lymphoid stem cell –> lymphocytes
2. Myeloid progenitor –> granulocytes
What are the three types of lymphocytes and what do they do?
- T cells - attack cells
- B cells - produce antibodies and memory cells
- Natural killer cells - attack cells
What are the five types of granulocytes?
- Neutrophil
- Eosinophil
- Basophil
- Mast cell
- Monocyte
What are the two types of monocytes and what do they do?
- Dendritic cell
2. Macrophage - first line of defense (non-specific)
What are the diagnostic tools for hematopoesis?
Bone marrow biopsy, cellular markers, CT scan, and CBC
What is leukemia?
Abnormal proliferation of hematopoietic cells
What are the two types of leukemia and what cells do they attack?
- Acute - earlier cells
2. Chronic - mature cells
What sex is more likely to develop leukemia?
Males
What are causes for leukemia?
Genetics and environment (radiation and benzene)
What is acute leukemia?
Abnormal production of immature myelocytes or granulocytes
How long does AML occur?
1-6 months (fatal 3-6 months if left untreated)
What are signs of AML?
Recurrent infections, fevers, malaise, low platelets, bone pain, and bruises
What is the prevalence of acute leukemia in each population?
Adults - 20%
Children - 80% (peak 2-4 years old)
What is CML?
Rapid proliferation of cells that are abnormal
What population does chronic leukemia effect?
Middle aged adults - peak 40 years
What is unique about chronic leukemia?
85% have Philadelphia chromosome - translocation of 22 and 9
What are signs of chronic leukemia?
Weight loss and fatigue
What is treatment for chronic leukemia?
Chemotherapy and bone marrow transplant
What is lymphoma?
Cancer that begins in the lymphatic tissues and spread to bone marrow
What are the two types of lymphoma?
- Hodgkin’s
2. Non-hodgkin’s
What cells does lymphoma effect?
B or T cells