Fig. 7

A 15-year-old boy with difficulty breathing and stridor presented with a large anterior mediastinal mass secondary to Hodgkin’s lymphoma. a Erect plain chest radiograph reveals a widened mediastinum (arrows). b Lateral view of the topogram from the CT scout image demonstrates the semi-upright positioning of the patient in the scanner because of reduced air entry on lying supine. c Axial CT imaging (lung windows) at the carina demonstrates marked airway compression of the main bronchi (black arrows) from the anterior mediastinal mass