From: Laryngeal polyp associated with reflux disease: a case report
Vocal cord nodule | Vocal cord polyp | |
---|---|---|
Laryngoscopic findings | Sessile, gray white, usually bilateral, in the anterior or middle third of the vocal folds | Pedicled, gray white/red, usually unilateral, located in the anterior and middle thirds of the vocal folds |
Size | Usually less than 0.3 cm | Usually greater than 0.3 cm |
Pathological features | Parakeratotic, stratified, squamous epithelial covering overlying dense fibrotic stroma There is prominent basement membrane thickening. Hemorrhage or hemosiderin-laden macrophages are not usually seen. | Two types: 1. Telangiectatic polyps: orthokeratotic, stratified, squamous epithelial covering overlying numerous thin-walled, dilated vessels in edematous stroma; areas of hemorrhage and hemosiderin-laden macrophages are usually seen 2. Gelatinous polyps: stratified, squamous epithelial covering overlying edematous stroma containing fibrin, proliferating fibroblasts, and few thin-walled vessels |