This article discusses some of the mechanistic aspects of plasma cell
tumor development. Plasmacytomagenesis, much like other forms of neopl
astic development, is a highly complex process that develops in the B
cell differentiation Lineage. As more is learned about the molecular g
enetics of multiple myeloma and PCTs in mice, a unifying concept will
emerge that possibly can explain the phenotypic differences in the two
neoplastic cell processes as variants of a common process.