Leukemia Flashcards
What is Leukemia?
A group of malignant disorders affecting the blood and
blood-forming tissues of
- Bone marrow
- Lymph system
- Spleen
At what age does Leukemia occur?
Occurs in all age groups
Thought of as a childhood disease
Number of adults affected is actually 9 times that of children
How does Leukemia occur?
Accumulation of dysfunctional cells due to loss of regulation in cell division
Fatal if untreated
What is the cause of Leukemia?
No single cause
Combination of genetic and environmental influences
PAthophysiology of Leukemia picture
Classification of Leukemia
Acute versus Chronic
Based on type of WBC
Acute Leukemia
Acute: Clonal proliferation of immature hematopoietic cells
Chronic Leukemia
Chronic: Mature forms of WBC and onset is more gradual
Types of acute Leukemia
Acute lymphocytic leukemia (ALL)
Acute myelogenous leukemia (AML)
Also called acute nonlymphoblastic leukemia (ANLL)
Types of Chronic Leukemia
Chronic myelogenous leukemia (CML)
Chronic lymphocytic leukemia (CLL)
Acute Myelogenous Leukemia (AML)
Abrupt, dramatic onset
Serious infection or abnormal bleeding
Uncontrolled proliferation of myeloblasts
Hyperplasia of bone marrow and spleen
Acute Lymphocytic Leukemia (ALL)
Most common type of leukemia in children
20% of acute leukemia in adults
Immature, small lymphocytes proliferate in the bone marrow-in children usually
Acute Lymphocytic Leukemia (ALL) S/S
Signs and symptoms may appear
Abruptly
Fever
Bleeding
Insidiously
Progressive weakness, fatigue, pain, bleeding tendencies
CNS manifestations are common-leukemic meningitis
Chronic Myelogenous Leukemia (CML)
Excessive mature neoplastic granulocytes in bone marrow
Move into peripheral blood in massive numbers
Ultimately infiltrate liver and spleen
_Philadelphia chromosome-
Diagnostic hallmark
Present in >90% to 95% CML patients_
Chronic, stable phase
Followed by acute, aggressive phase
Chronic Lymphocytic Leukemia (CLL)
Most common leukemia in adults
Production and accumulation of functionally inactive but long-lived, mature-appearing lymphocytes
B cell involvement
Lymphadenopathy is present throughout body
Complications from early-stage CLL are rare
May develop as disease advances
Pain, paralysis from pressure caused by enlarged lymph nodes
Leukemia Clinical Manifestations
Varied but usually related to
*Bone marrow failure
Overcrowding by abnormal cells-trouble with inadequate production of healthy cells
Inadequate production of normal marrow elements
Formation of leukemic infiltrates*
Leukemia Clinical Manifestations
Inadequate marrow elements cause
Anemia
Thrombocytopenia
Low to high number and altered function of WBCs