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Cross-Sectional Imaging of Paragangliomas of the Aortic Body and Other Thoracic Branchiomeric Paraganglia

Jonathan Balcombe1, Drew A. Torigian, Woojin Kim and Wallace T. Miller, Jr.

1 All authors: Department of Radiology, University of Pennsylvania School of Medicine, Hospital of the University of Pennsylvania, 3400 Spruce St., Philadelphia, PA 19104.


Figure 1
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  		Fig. 1 —42-year-old man with aortic body paraganglioma (patient 1). Contrast-enhanced axial CT image shows enhancing mass (arrows) projecting in anterior direction from aortopulmonary groove. Note central low attenuation suggesting central necrosis.

 

Figure 2
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  		Fig. 2A —49-year-old man with aortic body paraganglioma (patient 4). Coronal MR image shows intermediate T1 signal intensity mass (arrow) embedded in aortopulmonary groove.

 

Figure 3
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  		Fig. 2B —49-year-old man with aortic body paraganglioma (patient 4). Axial MR image shows high T2 signal intensity mass (arrows) embedded in anterior aortopulmonary groove.

 

Figure 4
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  		Fig. 3 —25-year-old man with Carney's syndrome (patient 3). Contrastenhanced axial CT image shows avid homogeneous enhancement of posteriorly projecting aortic body paraganglioma (arrows).

 

Figure 5
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  		Fig. 4 —39-year-old man with aortic body paraganglioma (patient 2). Contrast-enhanced axial CT shows large heterogeneously attenuating infiltrative mass (arrows) within posterior aortopulmonary groove with areas of poor enhancement, suggesting necrosis.

 

Figure 6
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  		Fig. 5 —Unidentified patient with supraaortic paraganglioma (patient 5). Contrast-enhanced axial CT image shows enhancing soft-tissue density mass arising from less common location, between right subclavian and common carotid arteries. Note aggressive local behavior with chest wall invasion (white arrows) and destruction of manubrium (black arrow).

 

Figure 7
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  		Fig. 6 —Drawing shows location of mediastinal paraganglia. A = coronary paraganglia, B = pulmonary paraganglia, C-E = subclavian-supraaortic paraganglia.

 

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