Pulmonary sequestration. Diagnosis by ultrasound.

Sonographic imaging of a basilar chest mass in each of three newborns and in a 2-month-old infant either confirmed or correctly suggested the diagnosis of surgically documented pulmonary sequestration. The appearance of each mass was that of a highly echogenic lesion, the homogeneity of which was interrupted only by vascular structures. In two cases, an artery was identified arising from the aorta and extending into the mass, thus confirming the diagnosis. Chest sonography should be utilized when the possibility of a pulmonary sequestration is considered.