Figure 3.178. Close-up of the face of the same infant showing again the disproportion between the large head and the small face which tapers to a narrow jaw giving rise to a triangular facies. The fronto-occipital circumference is normal and the fontanelles are enlarged. Note the frontal bossing, prominent eyes, long eyelashes, and downturned angles of the mouth (giving a carp-like appearance), micrognathia, and posteriorly rotated ears. A triangular facies is often the result of a disparity between the growth of the cranium, paced by normal brain growth, and the growth of the facial skeleton whose bones may share in an intrinsic growth deficiency.
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