Prenatally diagnosed ectrodactyly at 16 weeks' gestation by 2- and 3-dimensional ultrasonography: a case report.

Objective: Ectrodactyly is a rare malformation with various presentations. The current report describes a case of ectrodactyly detected using 2-dimensional (2D) and 3-dimensional (3D) ultrasonography at 16 weeks' gestation.

Methods And Results: The 2D ultrasonographic findings were ectrodactyly in the right hand and monodactyly in the left hand, and these results were confirmed and further clarified using 3D imaging. The postmortem X-ray findings were consistent with the ultrasonography.

Conclusion: We conclude that 3D ultrasonography can assist in clarifying 2D ultrasonography findings of hand malformations during the second trimester of pregnancy.