Cephalometric radiographs in SAHS have been reported in numerous publications. Abnormalities that have been associated with increased SAHS severity were summarized a few years ago by Schwab,15 and consist of mandibular and maxillary deficiency, reduced dimension of the posterior airway space (equivalent to PAS2 in the current article, measured at the base of the tongue), enlarged tongue, enlarged soft palate, and caudally displaced hyoid.,15These studies varied widely in quality, however. As pointed out by Miles and colleagues,16control groups may be matched, unmatched but from a similar population as the patients, a convenience sample from some other population, or only compared to normative data from the literature; and sample size may be quite small. However, a virtual blizzard of more recent studies has largely borne out these earlier results.17–26 A meta-analysis of earlier studies16 found that only the distance from the gonion to the gnathion (Go-Gn), a measure of the lateral dimension of the mandible, consistently predicted SAHS. However, even a cursory review of the numerous studies available to date finds that distance of the hyoid from the mandibular plane, increased soft palate and tongue, and mandibular and maxillary deficiency are mentioned so many times as correlating with degree of sleep-disordered breathing that a new meta-analysis would likely prove their significance as well.