Angiography, lateral view, arterial phase, of the left ECA in a 19-year-old man with uncontrollable epistaxis less than 24h after surgical removal of a nasopharyngeal mass. At the level of the SPA, a curvilinear contrast extravasation can be seen along the posterior margin of the nasopharynx, mimicking the appearance of a vein, known as the pseudo vein sign. Endovascular embolization with coils and Gelfoam fragments successfully stopped the bleeding.