<unk>  is a venous anomaly that commonly presents itself as a unilateral neck swelling in children and adults. It is rare to have bilateral neck swelling due to internal<unk> .
Jugular vein ectasia
Dural ectasia
Dural arteriovenous fistula
Arteriovenous fistula
Collapsed vein
Varicose veins
Aneurysm of sinus of Valsalva
Necklace of Venus