All issues > Volume 43(5); 2000

Case Report

J Korean Pediatr Soc. 2000;43(5):700-703. Published online May 15, 2000.

A Case of Partial Trisomy 9 by Balanced Maternal Translocation

Mi Kyung MK Kim¹, Young Kyoo YK Shin¹, Baik Lin BL Eun¹, Sang Hee SH Park¹, Sun Hwa SH Park², Soon Hyuk SH Lee³

¹Department of Pediatrics, Korea University, Seoul, Korea
²Department of Anatomical Pathology & Institute of Human Genetics, Korea University, Seoul, Korea
³Department of Orthopedic, Korea University, Seoul, Korea

Abstract

Trisomy 9p syndrome was first described by Rethore et al in 1970 and about 100 cases have been reported since. The phenotypic spectrum of this syndrome is characterized by craniofacial malformation, facial deformity, skeletal and dermatoglyphic anomalies with variable degrees of mental retardation. We experienced a case of partial trisomy 9 syndrome in a 15-month-old female who had multiple congenital anomalies of frontal bossing, oblique antimongoloid palpebral fissures, enophthalmos, hypertelorism, globular prominent nose, down-turned mouth, prominent low-set ears, simian creases of both hands, clinodactyly and single crease of 5th finger, congenital dislocation of both knees and mental retardation. In cytogenetic studies using G banding technique and fluorescent in situ hybridization(FISH), she presented with an extra derivative chromosome No. 9. The karyotype of the patient was confirmed as 47,XX,＋der(9),t(6:9)(q27;q21.2) mat. We report the case with the review of the associated literatures.

Keywords :Partial trisomy 9, Maternal translocation, Multiple congenital anomalies