Clinical Presentation

A 39-year-old woman presents with a long history of leg swelling.

(A) Computed tomographic angiogram (CTA) shows early opacification of the femoral vein (arrow) and tufts of disorganized vessels (arrowheads). (B) Arteriogram shows early opacification of the femoral vein (arrow) via tufts of vessels (arrowheads). (C) Further delay shows abnormal, enlarged, unnamed veins (arrowheads) in the thigh draining into the femoral and iliac veins.

Differential Diagnosis

• Peripheral arteriovenous (a-v) malformation: Indicated by multiple, enlarged arteries and early draining veins separated by a nidus of hypervascularity.

Essential Facts