PMC6195924_01
Chest radiograph, (a) postero-anterior and (b) latero-lateral views. A lung consolidation (arrows) is visible in the left retrocardiac region.
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fig1
Tuberculin skin tests resulted positive and a chest X-ray showed a dishomogeneous parenchymal consolidation in the left lower lobe (Figure 1a,b).
Axial CT scan through the lower lobe of the left lung in the lung window. An anomalous artery reaches a dysplastic parenchymal area in the left lower lobe posterior segment, corresponding to intralobar pulmonary sequestration (arrow); consolidation and trapping are concurrent.
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fig2
Suspecting active tuberculosis, a preliminary CT scan of the thorax was performed showing a heterogeneous consolidation with some cystic masses containing mixed fluid and air in the left lower lobe posterior segment, not in communication with the respiratory tract, and a probable expression of a dysplastic parenchymal area (Figures 2 and 3).
Coronal thoracic CT scan better showing the heterogeneous consolidation not communicating with the respiratory tract in the left lower lobe posterior segment (arrow).
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fig3
Suspecting active tuberculosis, a preliminary CT scan of the thorax was performed showing a heterogeneous consolidation with some cystic masses containing mixed fluid and air in the left lower lobe posterior segment, not in communication with the respiratory tract, and a probable expression of a dysplastic parenchymal area (Figures 2 and 3).
Contrast-enhanced study shows two anomalous vessels originating from the distal portion of the descending thoracic aorta: one vessel going from the posterior lateral portion of the aorta to the left lower lobe and another originating in the anterior area and extending to the right lower lobe (arrows).
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fig4
Just below the emergence of the previously anomalous vessel, another artery was detected that crossed the midline to achieve a healthy parenchyma in the right pulmonary base, configuring a pattern of aberrant systemic artery feeding a normal lung (Figures 4-6).
Coronal maximum intensity projection reconstruction, showing the origin of the two anomalous arteries from the descending aorta (arrows).
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fig5
Just below the emergence of the previously anomalous vessel, another artery was detected that crossed the midline to achieve a healthy parenchyma in the right pulmonary base, configuring a pattern of aberrant systemic artery feeding a normal lung (Figures 4-6).
Volume rendering reconstruction of thoracic aorta better showing the emergence of the two anomalous arteries (arrows).
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fig6
Just below the emergence of the previously anomalous vessel, another artery was detected that crossed the midline to achieve a healthy parenchyma in the right pulmonary base, configuring a pattern of aberrant systemic artery feeding a normal lung (Figures 4-6).