Original Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Radiol. Apr 28, 2012; 4(4): 141-150
Published online Apr 28, 2012. doi: 10.4329/wjr.v4.i4.141
Figure 1
Figure 1 Chest radiograph showing ring opacities (arrows) and parallel line shadows (arrowhead).