Presentation
Penetrating injury by knife to popliteal region - about 1 wk back. Local suturing done. Now local bruit.
Patient Data
Age: about 10 yrs
Gender: Male
Mix

There is a hypoechoic tract from skin to artery.
There is a fistula between popliteal artery and vein; measuring about 2.5 mm.
There is no thrombosis of artery or vein.
Short venous segment caudal to fistula is dilated.
Tract passes just lateral to tibial nerve. Nerve is intact.
Case Discussion
Findings of post-traumatic arteriovenous fistula in popliteal fossa.