Lymphadenopathy in CXR

Mediastinal

• Paratracheal: Lobular widening of paratracheal stripe . Anterior, right and left groups.
  • Azygous: Lower right paratracheal node just above RUL bronchus. To be distinguished from azygous vein.
• Anterior mediastinal:
  • Mediastinal widening with lobulated outline (Polycyclis margin). Increased opacity of retrosternal space.
• Middle mediastinum
  • AP window: Bulge between the arches of aorta and pulmonary artery.
  • Subcarinal: Increased density over subcarinal area, double denisty of heart, widening of carina. To be distinguished from left atrial enlargement.
• Posterior mediastinal
  • Paraesophageal : Displaced paravertebral line, Inhomgenuity of cardiac shadow.

Hilar: Lobulated outline. Increased hilar density compared to the other side (in unilateral) or inhogenous density.

Pulmonary: Appearance of solitary pulmonary nodule.

Internal mammary: Extrapleural characteristics.

Axillary

Supraclavicular

Read text book for a differential diagnosis of lymphadenopathy

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