A benign tumour composed predominantly of myoepithelial cells. A pure myoepithelial neoplasm is rare. ... (12 Dec 1998) ... 
(mi″o-ep″ĭ-the″le-o´mә) a benign tumor predominantly composed of myoepithelial cells; a pure myoepithelial neoplasm is rare.
Type: Term Pronunciation: mī′ō-ep′i-thē′lē-ō′mă Definitions: 1. A benign tumor of myoepithelial cells.