Diandric triploidy in a liveborn infant with 3-4 syndactyly and a neural tube defect

Abstract

Triploidy is a chromosomal abnormality caused by an additional haploid set of chromosomes. It is a common cause for early first trimester miscarriages. Only very rarely are babies with triploidy born alive and even more rarely do they survive beyond the first few days of life. We present here a case of a term baby with confirmed paternal (diandric) triploidy and some unusual features, who survived for 50 days and review the literature on those who survived.