Difference between revisions of "Haematopathology"

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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.


===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>
#Endemic:
#*Found in Africa.
#*EBV (Epstein-Barr virus) associated.<ref name=pmid12610094/>
#Non-endemic:
#*Typical of the BL seen in the western world; EBV negative.
#Immunodeficiency associated:
#*Associated with HIV infection.
 
===Pathophysiology===
*Origin cell: germinal centre B cells (favoured) vs. memory B cells.<ref name=pmid12610094/>
*Common translocation t(8;14).<ref name=pmid12610094/>
 
===Cytologic definition===
*t(8;14) (q24;q32) translocation + a few variants or c-myc rearrangement.<ref name=pmid12610094/>
 
===Histology===
*"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.  
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