ABC of Reading Chest X-Ray H F A B G C D E A Airway (midline, patent) B Bones (eg, fractures, lytic lesions) C Cardiac silhouette size D Diaphragm (eg, flat or elevated hemidiaphragm) E Edges (borders) of the heart (to rule out lingular and left middle lobe pneumonia or infiltrates) F Fields (lung fields well inflated; no effusions, infiltrates, or nodules noted) G Gastric bubble (present, obscured, absent) H Hilum (nodes, masses) I Instrumentation (eg, lines, tubes) Jeffrey M. Edmondson, MD Harker Heights, Texas Published by: Mohammad Al-Marhoon ( dr.marhoon@gmail.com) WWW.SMSO.NET . ABC of Reading Chest X-Ray H F A B G C D E A Airway (midline, patent)