ABSTRACT
Diagnosis of skeletal malformations using two-dimensional (2D) sonography is not always easy. Skeletal anomalies comprise a number of entities of low incidence (20 per 100 000 newborns). Half of these anomalies are lethal because of a narrow thorax with hypoplastic lungs. Lethal skeletal anomalies associated with hypoplastic lungs are responsible for 0.9% of all perinatal deaths.1–3
