Fig. 1

Endoscopic and CT findings of Early-onset pharyngeal airway collapse in infants A: antero-posterior retropalatal collapse during expiratory period; B: antero-posterior retropalatal collapse during inspiratory period in the same case to A; C: lateral retropalatal collapse during expiratory period; D: lateral retropalatal collapse during inspiratory period in the same case to C; E: lateral hypopharynx collapse during expiratory period; F: lateral hypopharynx collapse during inspiratory period in the same case to E; G: tongue base collapse; H: An improvement of PAL was found in the same case to C and D on bronchoscopy reviewed 1 month later; I: CT scan revealed pharyngeal cavity narrowing