Figure 1

Laryngoscopic images. (a) Preoperative laryngeal endoscopy image. The dotted white line indicates the tumour. (b) Airway Scope® image after induction of general anaesthesia. Only the stalk of the tumour was visible, and the remaining section (dotted white line) was thought to be lodged in the subglottis. (c) Airway Scope® image after manoeuvring the intubation tube. The tumour (dotted white line) re-appeared at the supraglottic area. (d) An image of the approximately 8 mm diameter tumour.