RT Journal Article SR Electronic T1 Trisomy 22 mosaicism. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 224 OP 225 DO 10.1136/jmg.14.3.224 VO 14 IS 3 A1 Mollica, F A1 Sorge, G A1 Pavone, L YR 1977 UL http://jmg.bmj.com/content/14/3/224.abstract AB A child with many symptoms of trisomy 22 syndrome is described. The child showed a 46,XY/47,XY,+22 chromosome constitution. This is the first reported case of a trisome 22 phenotype with such a mosaic karyotype.