PMC9354403_01
(A) Computed tomography angiography (CTA) before treatment revealing the anomalous systemic artery. (B) 3D reconstruction indicating normal development of the left bronchus. The anomalous systemic artery originated from the descending thoracic aorta and branched to the basal segments of the left lower lobe, parallel to the left inferior pulmonary vein. The pulmonary artery of the left lower lobe was absent from the basal segments and only present in the superior segment.
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F1
The structure of the bronchus in the left lower lobe was normal, and no lung tissue sequestration was noted (Figure 1).
(A) Angiography and coil embolization for the anomalous systemic artery. (B) CT images showing pulmonary infarction at 48 h after the intervention.
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F2
The procedure was uneventful (Figure 2A). Forty-eight hours after the intervention, chest CT showed signs of infarction of the left lower lobe (Figure 2B).
CT images at 1-year follow-up. (A) Lung CT showing significant alleviation of the interstitial changes in the left lower lobe. (B) 3D reconstruction showing blockage of the anomalous systemic artery and atrophy of the accompanying pulmonary vein in the basal segments but no change in the superior segment. The images of the pulmonary arteries were similar to those taken before the intervention. The pulmonary artery was absent from the basal segments.
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F3
The inferior left pulmonary artery and the superior segmental vein remained unchanged (Figure 3).