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Monozygotic twins with trisomy 18: a report of discordant phenotype
J S Schlessel1, W T Brown, A Lysikiewicz
1Department of Pediatrics, North Shore University Hospital-Cornell University Medical College, Manhasset, New York 11030.
Journal of Medical Genetics
|October 1, 1990
Abstract:
The predicted incidence of liveborn monozygotic trisomy 18 twins is one per million births. The first case of liveborn monozygotic trisomy 18 twins was reported in 1989 and we report a second case in which striking phenotypic discordance existed. The probability of monozygotic trisomy 18 twinning and the mechanisms for phenotypic discordance in trisomic twins is discussed.