Haem - lymphoma Flashcards
Why are there so many diff subtypes of lymphoma
can arise from cells at many diff stages of lymphoid maturation
Why are lymphocytes prone to lymphoma -give 3 reasons
1) Rapid proliferation in infection
2) VDJ recombination
3) Highly dependent on apoptotic process (so if this goes wrong…there is prolif of abnormal cells)
eg of oncogenes in lymphoma
c-myc, cyclin D1, bcl2, bcl6
Diff in présentation of CLL and lymphoma?
- CLL = symmetrical
- Lymphoma = asymmetrical painless lymphadenopathy
Risk factors for lymphoma
- Ag stimulation: H. Pylori/Coeliac disease
- Viral: HTLV1/EBV
Hodgkin’s lymphoma - where do the cells tend to arise from
Germinal centre
Smear cells
CLL
Presentation of hodgkin’s lymphoma
Asymmetrical, painless lymphadenopathy
B - Sx: Drenching night sweats/fever/10% wt loss in 6 months
B symptoms of Hodgkin’s lymphoma
- Drenching night sweats
- Fever
- 10% wt loss in 6 months
Most common subtype of Hodgkin’s lymphoma
Nodular sclerosing
Staging of Hodgkin’s lymphoma
1: one group of LNs
2: more than 1 group of LNs on 1 side of diaphragm
3: both sides of diaphragm involved
4: extra nodal sites
What is stained for in ?Hodgkin’s lymphoma
CD15 and CD30
2 useful investigations for stagin Hodgkins?
CT/PET
Lymph node biopsy
Treatment of Hodgkin’s lymphoma
COMBINATION CHEMOTHERAPY FOR ALL
Adriamycin, Bleomycin, Vinblastin, Dacarbazine
+/-radiotherapy
Common dilemma in the management of hodgkin’s lymphoma?
Do we use radiotherapy?
Radiotherapy would cure the lymphoma, but increases risk of malignancy later in life
Mx of relapse of Hodgkin’s lymphoma
Intensive chemo + autologous SCT
wtf is autologous SCT
PATIENT’S OWN SCs are harvested + frozen
- enables high dose radio/chemo to eradicate malignant cells
- no GvHD
3 high grade NHLs
Burkitt’s
Diffuse large b-cell
Mantle cell
3 low grade NHLs
Follicular
Small Lymphocytic
Marginal zone
starry sky appearance
Burkitt’s
Burkitt’s lymphoma
- translocation?
- oncogene?
t(8;14)
c-myc
Treatment of Burkitt’s lymphoma
Rituximab
t(11;14)
Mantle cell lymphoma
Mantle cell lymphoma
- translocation?
- which oncogene is upregulated?
t(11;14)
Cyclin D1
t(14;18)
Follicular B-cell lymphoma
HTLV1 infection predisposes to which malignancy?
Adult T-cell lymphoma
Coeliac disease is associated with which lymphoma?
Enteropathy associated T-cell lymphoma (EATL)
Mycosis fungoides is associated with which lymphoma?
Cutaneous T Cell lymphoma
t(2;5)
Anaplastic large cell lymphoma (T- cells)
Large epithelioid lymphocytes in sheets
Anaplastic large cell lymphoma (T-cells)
T-cell lymphoma which affects younger patients
Anaplastic large cell lymphoma
4 chemo drugs used to treat hodgkin’s lymphoma
ABVD Adriamycin Bleomycin Vinblastin Dacarbazine