Figure 7b. Typical carcinoid in a 41-year-old man. (a) Axial CT scan (5.0-mm section thickness), obtained at the level of the distal left main bronchus, shows a nodule (arrow) in the left upper divisional bronchus. (b) CT scan (mediastinal window) obtained 10 mm inferior to a shows the low-attenuation mass (arrow) in the lingular segmental bronchus. There was no associated atelectasis or obstructive pneumonia.