NCIt definition : A solution composed of iodine and potassium iodide, which can be used as a reagent
and antiseptic, with potential use in cancer diagnosis. The iodine in Lugol's solution
selectively binds to alpha-1,4 glucans found in polysaccharides, such as glycogen.
Lugol's solution reacts with glycogen in normal, healthy non-keratinized, squamous
epithelium and the iodine-glucan complex stains the glycogen-containing cells dark
brown. Cancer cells are devoid of glycogen, so these cells will stay unstained. The
presence of cancer cells can be detected by the degree of staining and the neoplastic
cells can be surgically removed. High-grade intraepitheial neoplasia has almost no
glycogen-containing epithelium.;