Leukaemia Flashcards
What is leukaemia?
Clonal proliferation of malignant blood cells
How does leukaemia happen?
Malignant cells undergo uncontrolled expansion in bone marrow leading to bone marrow failure and the cells circulate in blood and can infiltrate various organs
What are the 2 types of leukaemia?
Acute and chronic
What is acute leukaemia?
Malignant transformation occurs in haemopoietic stem cell
Defined by presence of over 20% blasts in blood or bone marrow
What are 2 types of acute leukaemia?
Acute myloid leukaemia AML (80%)
Acute lymphoblasitc leukaemia ALL (20%)
What is chronic leukaemia?
Proliferation of more mature precurser cell. Slower progression with relatively benign cause
What are 2 types of chronic leukaemia?
Chronic myloid leukaemia CML
Chronic lymphocytic leukaemia CLL
What are the causes of leukaemia?
INHERITED - Downs, klinefelters, immuno deficiencies
ENVIRONMENTAL - radiation, chemo, infection, myeloproliferative disease
What is AML?
Acute myloid leukaemia
Most common acute leukaemia in adults, 70 yrs
PRIMARY - de novo
SECONDARY - after another cause, eg chemo
What are the clinical features of acute leukaemia (AML and ALL)?
BONE MARROW FAILURE
anaemia
neutropoenia
thrombocytopoenia
ORGAN INFLITRATION
lymadenopathy
hepatomegaly
splenomegaly
What investigations would you do for AML?
FBC
blood film - to see myloblasts
bone marrow biopsy
What is the treatment for AML?
combination chemo
supportive treatment
bone marrow transplant
What is the prognosis of AML dependant on?
Age. Higher cure rate if less than 60 yrs
What is ALL?
Acute lymphoblastic leukaemia
Most common leukaemia in children, 2-10 yrs
What investigations would you do for ALL?
FBC
blood film - to see lymphoblasts
bone marrow biopsy