Upper lobe pulmonary venous diversion

Upper lobe pulmonary venous diversion (cephalisation) reflects elevation of left atrial pressure and can occur with pulmonary oedema. It produces stag-antler's sign on a frontal chest x-ray.

The normal left atrial pressure is 5-10 mmHg. An elevation of left atrial pressure to 10-15 mmHg will result in cephalisation. Possible causes for cephalisation include 2:

The comparison vessels should be equidistant from the hilar point

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Article information

rID: 18228
System: Chest, Cardiac
Section: Signs
Synonyms or Alternate Spellings:
  • Upper lobe venous diversion
  • Cephalisation of pulmonary veins
  • Cephalization of pulmonary veins
  • Pulmonary venous cephalisation
  • Pulmonary venous cephalization

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