fig1
Figure 1. A: axial view of CT thorax showing a right upper lobe mass; B: coronal view of CT showing right upper lobe mass and tracheal bronchus; C: axial view of CT showing posterior segment bronchus (B2) originating from intermedius bronchus; D: coronal view of CT thorax showing artery to apical segment (A1) arising from the right main pulmonary artery. TB: tracheal bronchus
