Ring chromosome 15 syndrome

Ring chromosome 15 is a rare chromosomal anomaly syndrome, with a highly variable phenotype, characterized by pre- and/or postnatal growth retardation, variable intellectual disability, short stature, dysmorphic features (microcephaly, triangular facies, frontal bossing, hypertelorism, ear anomaly, broad nasal bridge, highly arched palate, micrognathism), hand and feet anomalies (e.g. brachydactyly, clinodactyly, syndactyly), and multiple hyperpigmented and/or hypopigmented spots. Severe phenotypes present with cardiac abnormalities and/or renal malformations. Other reported features include hypotonia, speech delay, talipes equinovarus, and genital anomalies (cryptorchidism and hypospadias).

Short stature

A height below that which is expected according to age and gender norms. Although there is no universally accepted definition of short stature, many refer to \"short stature\" as height more than 2 standard deviations below the mean for age and gender (or below the 3rd percentile for age and gender dependent norms).


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