Role of Doppler sonography in the diagnosis of pulmonary sequestration in an elderly patient: a case report.

An 83-year-old man presented with an asymptomatic mass-like lesion in left lower lobe on chest radiograph and CT, with no change over the past 7 years. Because of discrepancy between clinical and radiological manifestations, chest color Doppler sonography was done and identified a large tortuous pulsating vessel with systemic arterial waveform flowing toward the probe and entering the lesion at its apex. Subsequent contrast-enhanced reconstructed CT scans of the chest with angiography confirmed the diagnosis of intralobar pulmonary sequestration.