Nodes

  • Para tracheal

  • Azygous

  • Anterior mediastinal

  • Middle mediastinal

  • Posterior mediastinal

  • AP window nodes

  • Para vertebral

  • Sub carinal

  • Hilar

  • Parenchymatous

  • Internal mammary nodes

  • Lung field

 

Unilateral VS bilateral

Bilaterally symmetrical VS asymmetrical

Radiologic signs

  • Polycyclic margin
  • Silhouette sign
  • Extra pleural sign
  • Clear space between heart and nodes
  • Inhomogeneous cardiac density