A liveborn infant with complete triploidy (69,XXX).

The special report of the World Health Organiza- tion (1966), summarizing the results of chromosome studies in spontaneous abortion, revealed that 17% of those with an abnormal karyotype were tri- ploids. More recently Edwards et al. (1967), in re- porting two further abortions with triploidy, showed that, with an abortion rate of 20% and using Carr's data (Carr, 1965), the survival rate of triploid embryos was much less than 1 %. Consequently there are few reports of liveborn infants with this chromosome complement and, with two exceptions described by Bernard et al. (