Fig. 5. Unicoronal (right) synostosis in a 12-month-old girl. A : The plain skull radiography and 3-D CT AP view images show the fused right coronal suture as the absence of a suture and a bony ridge compared to the patent left coronal suture (C). The "harlequin eye" appearance of the right orbit, the elevated ipsilateral sphenoid wings (arrows), the facial asymmetry (deviation of the nose and chin to the contralateral side), and the contralaterally shifted anterior fontanel are also demonstrated. The 3-D CT images also show the contralateral frontal bossing and ipsilateral hypoplastic supraorbital ridge. B : The plain skull radiography and 3-D CT lateral and superior view images show the absence of the right coronal suture, shallow ipsilateral anterior cranial fossa (^*) and contralateral frontal bossing (arrow). Anterior plagiocephaly due to the decreased AP dimension of the right cranium with shifted anterior fontanel and contralateral frontal bossing are demonstrated on the superior view image.