Rib Exostoses Presenting as Mediastinal Masses: A Rare Presentation and Minireview of the Literature

Figure 2

Thoracic computed tomography (CT) scan. (a) Osteochondroma developed on the internal face of left ribs, anterior arch, with mass effect on anterior mediastinum, which is associated with rib cage deformation (axial section, bone window). (b) Osteochondroma developed on the internal face of left ribs, anterior arch (sagittal section, bone window). (c) Osteochondroma developed on the internal face of left ribs, lateral arch (coronal section, bone window). (d) Osteochondroma developed on the anterior arch of left ribs, with preaortic expansion in the retrosternal space and ascending aorta compression.

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