2020 Volume 34 Issue 6 Pages 635-641
The patient was a woman in her 50s. On physical examination, a chest radiograph showed a well-defined tumor shadow overlapping the cardiac shadow in the lower left lung field. Chest-enhanced CT and three-dimensional CT showed an abnormal artery with a maximum diameter of 8.5 mm that diverged from the descending thoracic aorta and directly flowed into the left lung segment. The lower left lobe was normal, and no apparent pulmonary sequestration was observed. The patient was diagnosed with anomalous systemic arterial supply to a normal basal segment (Pryce type I). Since the distribution area of the abnormal arteries was mostly confined, only abnormal artery resection was performed using an autosuture device under thoracoscopy. Chest-enhanced CT showed a decrease in pulmonary vein flow in the area of distribution of abnormal arteries, six months after surgery. For relatively rare cases of anomalous systemic arterial supply to a normal basal segment (Pryce type I), surgery involving resection of the aberrant artery may be successful and lead to a favorable outcome.
