Schlessel J S, Brown W T, Lysikiewicz A, Schiff R, Zaslav A L
Department of Pediatrics, North Shore University Hospital-Cornell University Medical College, Manhasset, New York 11030.
J Med Genet. 1990 Oct;27(10):640-2. doi: 10.1136/jmg.27.10.640.
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.
预测的活产单卵性18三体双胞胎的发生率为每百万例出生中有一例。1989年报道了首例活产单卵性18三体双胞胎，我们报告了第二例存在明显表型不一致的病例。本文讨论了单卵性18三体双胞胎的发生概率以及三体双胞胎表型不一致的机制。
