576719.fig.002a
(a)
576719.fig.002b
(b)
576719.fig.002c
(c)
Figure 2: (a) Supraglottic larynx with the pharyngeal tonsils seen laterally. (b) Rapid collapse of the pharyngeal tonsils medially on inspiration. (c) Complete obstruction of the airway by the pharyngeal tonsils on inspiration. On the expiration, the tonsils returned to their normal positions as in Figure 2(a).