Stark P, Lester R G, Greene R E
Chest. 1985 Apr;87(4):541-3. doi: 10.1378/chest.87.4.541.
A pseudolesion encountered in the lateral chest roentgenogram of normal patients is described. This concatenation of shadows can produce an opacity which projects over the distal aortic arch and can simulate a mass or pneumonia. This pseudolesion can be found in 4 to 5 percent of normal lateral chest films and is formed by superimposition of normal upper lobe vascular structures.
