Copyright © 2006 by Mosby, In Slide 1 Chapter 22 Chapter 22 Pneumothora Pneumothora Figure 22-1. Right-side pneumothorax. Figure 22-1. Right-side pneumothorax. GA, GA, Gas accumulation; Gas accumulation;DD, DD, depressed diaphragm; depressed diaphragm; CL, CL, collapsed lung. collapsed lung. Inset, Inset, Atelectasis, a common secondary anatomic alteration of the lun Atelectasis, a common secondary anatomic alteration of the lung GA DD CL