PMC5841111_01
Chest X-ray showing hyperinflation on the left side.
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A chest X-ray was performed for abnormal breath sounds and showed hyperlucency of the left lung (Figure 1).
(a) CT scan of the chest showing a hypodense cystic lesion in the middle mediastinum (arrow), causing compression on the carina and the proximal aspect of the mainstem bronchi, more pronounced on the left main bronchus. (b) 3D reconstruction of the CT scan showing a significant narrowing of the left main bronchus (arrow), caused by external compression of the adjacent cystic lesion.
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Thoracic computed tomography (CT) scan and angiogram showed a soft tissue mass in the middle mediastinum, compressing the carina and proximal part of the right and left main bronchi, more pronounced on the left main bronchus (Figure 2).
MRI of the chest showing lobulated mass lesion heterogeneously hypointense on T1-weighted images (arrow) (a), and hyperintense on T2-weighted images (arrow) (b). The mass is in the middle mediastinum, at the level of the carina and adjacent to the trachea extending to the subcarinal region, causing compression on the carina and both main bronchi, more pronounced on the left main bronchus.
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This mass was further delineated by magnetic resonance imaging of the thorax with contrast which revealed a lobulated cystic mass lesion (Figure 3).