Metastases to the larynx.

Four patients with metastases to the larynx are reported. The pathways of metastatic invasion of the larynx are discussed and illustrated with whole organ laryngeal sections from these cases. Although three of the four cases were clinically silent, all could have been detected on indirect laryngoscopy. The true incidence of laryngeal metastases appears to be much higher than clinically suspected, and indirect laryngoscopy of all patients "at risk" should be considered.