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| ==Burkitt's lymphoma== | | ==Burkitt's lymphoma== |
| | {{main|Burkitt lymphoma}} |
| ===General=== | | ===General=== |
| *Abbreviated ''BL''. | | *Abbreviated ''BL''. |
| *Extremely high proliferative rate & rate of apoptosis. | | *Subtyped by etiology. |
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| ===Subtypes=== | | ===Microsopic=== |
| *Three subtypes recognized:<ref name=pmid12610094>{{cite journal |author=Bellan C, Lazzi S, De Falco G, Nyongo A, Giordano A, Leoncini L |title=Burkitt's lymphoma: new insights into molecular pathogenesis |journal=J. Clin. Pathol. |volume=56 |issue=3 |pages=188–92 |year=2003 |month=March |pmid=12610094 |pmc=1769902 |doi= |url=http://jcp.bmj.com/cgi/pmidlookup?view=long&pmid=12610094}}</ref>
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| #Endemic:
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| #*Found in Africa.
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| #*EBV (Epstein-Barr virus) associated.<ref name=pmid12610094/>
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| #Non-endemic:
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| #*Typical of the BL seen in the western world; EBV negative.
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| #Immunodeficiency associated:
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| #*Associated with HIV infection.
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| ===Pathophysiology===
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| *Origin cell: germinal centre B cells (favoured) vs. memory B cells.<ref name=pmid12610094/>
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| *Common translocation t(8;14).<ref name=pmid12610094/>
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| ===Cytologic definition===
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| *t(8;14) (q24;q32) translocation + a few variants or c-myc rearrangement.<ref name=pmid12610094/>
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| ===Histology===
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| *"Starry-sky pattern". | | *"Starry-sky pattern". |
| **The ''stars'' in the pattern are: tingible-bodies laden macrophages. | | **The ''stars'' in the pattern are: tingible-bodies laden macrophages. |