Case 37
This radiograph demonstrates a hazy right paramedian opacity with an indistinct right heart border. This is a typical radiographic appearance of pectus excavatum. A lateral radiograph or a prior CT (if available) could be used to confirm. The primary differential consideration would be a right middle lobe pneumonia or potentially a mediastinal mass if the sternal depression is severe enough to cause deformation of the mediastinal contours (not seen in this case).