Lethal multiple pterygium syndrome. The importance of fetal posture in mid-trimester diagnosis by ultrasound: discussion and case report.

Lethal multiple pterygium syndrome and its variants provide an opportunity for prenatal diagnosis using mid-trimester ultrasound examination. The case presented here highlights the importance of postural deformity in reaching a diagnosis and illustrates the importance of full ultrasound examination of the fetus even when the well-documented common features of a condition are absent.