RT Journal Article SR Electronic T1 Triple mosaicism 45,XY,--18/46, XY/47,XY,+18. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 232 OP 234 DO 10.1136/jmg.16.3.232 VO 16 IS 3 A1 Frydman, M A1 Shabtai, F A1 Barak, Y A1 Halbrecht, I A1 Elian, E YR 1979 UL http://jmg.bmj.com/content/16/3/232.abstract AB A patient with symptoms clinically resembling Edwards's syndrome is presented. Cranial asymmetry, thoracic and lumbar hemivertebrae, and an additional rib were the unusual features. The cytogenetic studies revealed the coexistence of three separate cell lines with 45,XY,--18/46,XY/47,XY,+18 complement.