-- RadioGraphics 1997; 17: 725-745

Figure 13: Intralobar sequestration in a 26-year-old man with recurrent pneumonia in the left lower lobe since childhood. Panel A Posteroanterior chest radiograph shows a large, multicystic mass containing several air-fluid levels in the lower left hemithorax. Panel B Contrast material_enhanced chest CT scan (lung window) shows a large, multicystic lesion containing numerous air-fluid levels. Panel C Sagittal magnetic resonance (MR) image (repetition time msec/echo time msec = 50/15; gradient-recalled acquisition steady state) demonstrates a high-signal-intensity artery (Arrow in ), which arises from the distal thoracic aorta and supplies the intralobar sequestration in the left lower lobe. Panel D Arterial phase digital subtraction angiogram obtained after selective injection demonstrates the anomalous aortic branch feeding the lesion. Panel E Venous phase digital subtraction angiogram demonstrates drainage via the superior pulmonary vein, with contrast material filling the left atrium.Panel F Photograph of a cut section of a resected lobe from another patient demonstrates a multicystic intralobar sequestration.

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