TY - JOUR T1 - Ring chromosome 13 in an Omani infant boy with mental retardation and multiple congenital anomalies JF - Saudi Medical Journal JO - Saudi Med J SP - 800 LP - 803 VL - 22 IS - 9 AU - Poothirikovil Venugopalan AU - Ravinder K. Kenue Y1 - 2001/09/01 UR - http://smj.org.sa/content/22/9/800.abstract N2 - An Omani infant boy with severe physical and psychomotor retardation, facial dysmorphism, and anomalies of the cardiovascular and genito-urinary systems is described. The chromosomal analysis revealed a 46, XY, r (13) (p11;q34) karyotype. The cytogenetic basis of this rare abnormality is outlined and phenotypic features are compared with published reports. ER -