Vascular pedicle

Last revised by Francis Deng on 28 Nov 2019

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 edema:

  • normal or narrowed-capillary permeability pulmonary edema
  • normal-acute cardiac failure
  • wide-fluid overload or renal failure pulmonary edema 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.

ADVERTISEMENT: Supporters see fewer/no 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.