[Intralobar lung sequestration. Diagnosis using the duplex-scan technic].

A 3 7/12 year old boy, suffered from a intralobar sequestration of the lung and recurrent pneumonia. In the area of the right lower lobe, a plain film showed a limited density. The ultrasonographic evaluation demonstrated a homogenous tumor above the diaphragm. We found pulsatile flow patterns by pulsed doppler sonography within the arteries feeding the sequestration. Aortography finally clearly showed the anomalous arteries leading from the descending aorta to the sequestrum. Bronchoscopy and bronchography demonstrated, that the sequestered area of the lung had no open connexion to the rest of the bronchial tree. Surgical treatment is the only possible method to remove the cause of the recurrent infections.