1) Recognize normal mediastinal lines, stripes, and interfaces on the chest radiograph. 2) Use the mediastinal lines, stripes, and interfaces to localize mediastinal abnormalities. 3) Know the differential diagnosis for abnormalities in all mediastinal compartments, and recognize findings that can help distinguish one abnormality from another.
Heyneman, L,
Mediastinal Abnormalities. Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL.
http://archive.rsna.org/2014/14001440.html