title: Phenotypic features of pure 9p deletion in a male infant include cryptorchidism, congenital heart defects and postaxial polydactyly.
abstract: We report a 2 1/2-year-old male infant with a karyotype of 46,XY,del(9)(p22) and the phenotypic features of craniofacial dysmorphisms, hypotonia, psychomotor developmental delay, mental retardation, ventricular septal defect, atrial septal defect, cryptorchidism and postaxial polydactyly of the fingers. A rudimentary poorly developed extra digit in the ulnar side of the fifth finger was observed in each hand. The present case adds to the literature of postaxial hexadactyly of the fingers in chromosome 9p deletion syndrome. We suggest that 9pter-p22 may contain genetic loci associated with human postaxial polydactyly.
authors.affiliation: Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan. cpc_mmh@yahoo.com
authors.forename: C-P
authors.initials: CP
authors.lastname: Chen
authors.forename: S-P
authors.initials: SP
authors.lastname: Lin
authors.forename: M-R
authors.initials: MR
authors.lastname: Chen
authors.forename: J-W
authors.initials: JW
authors.lastname: Su
authors.forename: S-R
authors.initials: SR
authors.lastname: Chern
authors.forename: Y-J
authors.initials: YJ
authors.lastname: Chen
authors.forename: M-S
authors.initials: MS
authors.lastname: Lee
authors.forename: W
authors.initials: W
authors.lastname: Wang
mesh_terms: D000015:Abnormalities, Multiple / Q000235:genetics*; D002675:Child, Preschool; D002872:Chromosome Deletion; D002899:Chromosomes, Human, Pair 9 / Q000235:genetics; D003456:Cryptorchidism / Q000235:genetics*; D006330:Heart Defects, Congenital / Q000235:genetics*; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics; D008297:Male; D010641:Phenotype; D017689:Polydactyly / Q000235:genetics*