lymphoma vs leukemia?

Ned Lally lally at biochem.dental.upenn.edu
Thu Sep 16 13:21:32 EST 1993


In article <gila005-090993204812 at right.dom.uab.edu>, gila005 at uabdpo.dpo.uab.edu (Steve Holland) writes:
|> In article <sspencer-090993151038 at ted.bocklabs.wisc.edu>,
|> sspencer at macc.wisc.edu (Stephan Spencer) wrote:
|> > 
|> > I was wondering if someone could delineate the difference between a
|> > lymphoma and leukemia.
|> > 
|> > Thanks.. 
|> > 
|> > Stephan Spencer
|> > University of Wisconsin, Biochemistry
|> > sspencer at macc.wisc.edu
|> 
|> A leukemia is a tumor that produces abnormal white blood cells in the 
|> bloodstream.  A lymphoma is a tumor of the lymph nodes that causes
|> lymph nodes to expand, invade other organs, and cause lymphoid
|> tissue to appear where it should not.  

Leukemias are "tumors" of the bone marrow (blood forming cells), while lymphomas
are tumors of the lymphoid organs and lymphatics (effector cells). When tumor 
cells are found in the circulating blood, by definition, it is leukemia.
 


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