Fig. 1

Preoperative chest CTA of a 56-year-old man showed unilateral absence of left pulmonary artery and pulmonary mass in left lower lobe. Axial contrast-enhanced CT showed a cavitary lesion measuring 5.5 cm × 5.7 cm in the superior segment of left lower lobe and absence of left pulmonary artery in its expected course (a). Coronal CT reconstructed image demonstrated the absence of left pulmonary artery and extensive emphysematous changes in the pulmonary parenchyma (b). Volume rendering CT revealed the absence of the left pulmonary arterial vasculature(c)