| A chromosomal anomaly of chromosome 13 with characteristics of a widely variable phenotype ranging from mild to severe. Principle manifestations include intrauterine growth retardation, developmental delay, short stature, moderate to severe intellectual deficit, microcephaly, facial dysmorphism (i.e. up-slanting palpebral fissures, hypertelorism, abnormal ears, broad nasal bridge, high arched palate, micrognathia, small mouth, and thin lips), hands and feet anomalies and genital abnormalities. |