Congenital Pelger-Huet anomaly in triplets.

Congenital Pelger-Huet anomaly is an autosomal dominant disorder characterized by incomplete nuclear segmentation of granulocytes. The morphology of these mature but hyposegmented granulocytes may be confused with that of immature granulocytes (bands), thereby suggesting bacterial infection. We report the first known case of triplets with this condition, and emphasize the need to identify accurately this normal variant.