A histochemical study of simple laryngeal polyps.

Benign laryngeal polyps and normal larynxes have been studied by histochemical and other staining methods. These show that the polyps contain much free hyaluronic acid and 6-chondroitin sulphate. Their mode of production may be the mechanical separation of these compounds from collagen fibres by vibration. An alcian-elastic stain may be a helpful diagnostic method.