Mosaic Trisomy 9p in a Patient with Mild Dysmorphic Features and Normal Intelligence

To the Editor: Partial and whole duplications of the short arm of chromosome 9 have been commonly reported in the literature with characteristic phenotypic features and intellectual disabilities. The clinical features of 9p duplications are broad and can include growth retardation, developmental delay, intellectual disability, microbrachycephaly, deep set eyes, hypertelorism, downslanting palpebral fissures, prominent nasal root, bulbous nasal tip, low-set ears, short fingers and toes with hypoplastic nails, and delayed bone age (Bonaglia et al., 2002; Zou et al., 2009; Guilherme et al., 2014).