Review
Copyright ©The Author(s) 2015.
World J Radiol. Dec 28, 2015; 7(12): 459-474
Published online Dec 28, 2015. doi: 10.4329/wjr.v7.i12.459
Figure 25
Figure 25 Saber-sheath trachea. In a 70-year old male with chronic obstructive pulmonary disease, axial images of thorax in mediastinal (A) and lung (B) window settings show increase in antero-posterior diameter of the trachea with narrowing of the transverse diameter. The sagittal to transverse diameter ratio measured 2.13:1.