This prospective study included 30 patients with glottic carcinoma of the larynx who were treated primarily by vertical partial laryngectomy. The pyriform sinus mucosa was used to reconstruct the new laryngeal wall and to form a pseudo-vocal fold at the side of resection. Our results showed that 90 per cent of patients were decannulated, 80 per cent were able to eat a normal diet, 70 per cent developed excellent voice quality after surgery and a 97 per cent three-year survival was achieved. The pyriform sinus mucosa proved to be a reliable material for reconstruction after vertical partial laryngectomy.