Vascular pedicle

Vascular pedicle is bordered on the right by venous structures (right brachiocephalic vein above and superior vena cava) and on the left by an arterial structure (the left subclavian artery origin). The azygos vein (black oval) is seen en face above the right main bronchus.

The vascular pedicle width can help differentiate different forms of pulmonary oedema:

  • normal or narrowed-capillary permeability pulmonary oedema
  • normal-acute cardiac failure
  • wide-fluid overload or renal failure pulmonary oedema and chronic heart failure.

Radiographic features

Plain radiograph

The vascular pedicle width (VPW) is the distance between parallel lines drawn from the point at which the superior vena cava intersects the right main bronchus and a line drawn at the takeoff of the left subclavian artery from the aorta. The mean vascular pedicle width is 38-58 mm on posteroanterior chest radiographs.


Article information

rID: 10064
System: Chest
Section: Gamuts
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Cases and figures

  • Figure 1: vascular pedicle
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.