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Antenatal sonographic findings of extralobar pulmonary sequestration.

Once nonimmune hydrops fetalis (NIHF) has been identified, the search for a specific cause is difficult and frequently disappointing. With recent improvements in sonographic imaging, ultrasound has become an important tool in the antenatal identification of structural abnormalities associated with hydrops fetalis. The purpose of this article is to report the association of extralobar pulmonary sequestration (EPS) and NIHF and to describe the antenatal sonographic features of a case of EPS.