Figure 2.

Right upper extremity venogram in a 31-year-old woman with chronic swelling with exercise. Top image is the venogram with the arm in a neutral position that shows stenosis of the subclavian vein at the thoracic outlet. Bottom image shows the venogram with the arm abducted (provocative maneuver), in this image, there is complete occlusion of the subclavian vein at the thoracic outlet. Patient underwent thoracic outlet decompression; repeat venogram showed resolution of the compression without residual stenosis.