monoclonal gammopathy of unknown significance

monoclonal gammopathy of unknown significance (MGUS),

a gammopathy diagnosed by electrophoresis of serum of asymptomatic old people who have no other evidence of plasma cell neoplasia; in 20% of cases it evolves into plasma cell malignancy.

mon·o·clo·nal gam·mop·a·thy of un·known sig·ni·fi·cance

(MGUS) (mon'ō-klōn'ăl gam-mop'ă-thē ŭn-nōn' sig-nif'i-kăns) A gammopathy diagnosed by electrophoresis of serum of asymptomatic old people who have no other evidence of plasma cell neoplasia; in 20% of cases, it evolves into plasma cell malignancy.
Synonym(s): benign monoclonal gammopathy.