Neonatal pulmonary blastoma.

A thoracic mass was identified on a routine ultrasound (US) examination in the 30th week of gestation. A postnatal chest radiograph, US, and computed tomography demonstrated a well-delineated, solid, cystic tumor in the left lower lobe. The mass was excised and a diagnosis of pulmonary blastoma (PB) was made on pathologic examination. The patient is alive and free of disease 8 years after the operation. PB is a rare primary neoplasm of the lung, adults being more frequently affected than children. This case appears to be the third neonatal PB reported and one of the few long-term survivors.