[Difficult intubation due to an unusual anomaly of the larynx].

A patient, scheduled for an ophthalmic operation could not be intubated in spite of various different attempts. The cause of the difficulties was a cartilagineous thickening of the right ary-epiglottic fold, which was lying like a second epiglottis over the entry of the glottis. The importance of ventilation-management by mask and close cooperation with a laryngologist is stressed.