Abnormal hematologic features in a live-born female infant with triploidy.

Complete trisomy is a fatal chromosomal anomaly commonly associated with multiple phenotypic abnormalities. The associated hematologic abnormalities that occur with this disorder are not as well known, however. We present a case of a live-born female infant with this anomaly and discuss in detail the hematologic features of the peripheral blood. Abnormal physical features of the infant and the placenta are also discussed.