[Supraglottic and glottic carcinomas. Study of the incidence in the last 31 years].

Introduction: Laryngeal carcinoma is a common neoplasia in our country. It is well-known that the supraglottis is more frequently involved in Mediterranean countries. We present our results on the incidence of neoplasias affecting supraglottis and glottis and we find a change in the normal trend.