Figure 1.

(A) Midsagittal MRI from a representative child with adenotonsillar hypertrophy and diagnosed OSA. Selected axial scans in (B) retropalatal and (C) retroglossal regions at the level of tonsils from the same subject. Arrows show anteroposterior narrowing of the (B) retropalatal airway and transversal narrowing of the (C) retroglossal airway due to enlarged tonsils. (D) Lateral radiograph of the same child. (E) Schematic presentation of the pharyngeal airway presents the cephalometric variables measured. Definitions of abbreviations are given in Table 1.