“…Skull thickening (cranial sclerosis) is the most typical and early feature [1,6,8,10-37] (85%), often presenting before longitudinal bone striations, and typically affects cranial vault, base and some facial bones, leading to sinuses obliteration and reduction of mastoid pneumatization [1,10,12-14,19,21,26,33,34] (sometimes responsible for failure to thrive). Facial dysmorphisms include macrocephaly (43%) [2,11-17,19,20,27-32,34,36-39], frontal and occipital bossing (32%) [2,11-15,17,19-21,30-33,36], mandible overgrowth with protuberance of the jaw and dental malocclusion (12%) [2,11,14,23] (giving a leonine appearance), ocular hypertelorism [6,8,10,14,19,20,23,27,29-31,38-40], down-slanting palpebral fissures [19,28,31], low set broad nasal bridge (29%) [1,2,6,8,12,14,15,17,18,20,23,30-32,37,38,41,42], narrow high-arched or cleft palate (Pierre Robin’s triad) (12%) [2,6,8,14-16,19,21,30,31,35] and low set dysplastic ears (9%) [6,12,19,20,29-31,…”