1. A Middle-aged Asthmatic Woman With Unresolving Cough
Adrian Kwok-Wai Chan, MBBS, Keng Leong Tan, MBBS, Angela Takano, MD, Pyng Lee, MD, MBBS, FCCP 
CHEST 
Volume 139, Issue 3, Pages (March 2011)
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Copyright © 2011 The American College of Chest Physicians Terms and Conditions

2. Figure 1 Chest radiograph showed a left main bronchus cutoff (arrow).
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Copyright © 2011 The American College of Chest Physicians Terms and Conditions

3. Figure 2
Chest CT scan showed an intraluminal mass in the left main stem bronchus with resultant obstructive hyperinflation of the left lung.
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Copyright © 2011 The American College of Chest Physicians Terms and Conditions

4. Figure 3
Bronchoscopic image of the tumor causing near total obstruction of the left main bronchus.
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Copyright © 2011 The American College of Chest Physicians Terms and Conditions

5. Figure 4
A higher magnification image showing tumor cells lacking necrosis and rare mitoses (hematoxylin-eosin stain; original magnification × 400).
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Copyright © 2011 The American College of Chest Physicians Terms and Conditions

6. Figure 5
A high-power view showing tumor cells staining positive for CD56, a neuroendocrine marker. (anti-CD56 stain; original magnification × 400).
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