NCIt definition : A benign and excessive tumor-like growth of mature cells and normal tissues which
grow in a disorganized pattern.;
Alternative definition : NCI-GLOSS: A benign (not cancer) growth made up of an abnormal mixture of cells and
tissues normally found in the area of the body where the growth occurs.; CDISC: An excessive but focal overgrowth of cells and tissues native to the organ
in which it occurs.;