The pseudo-aneurysm is an encapsulated hematoma of post-traumatic origin which is in communication
with the lumen of the artery of relevance. We present a rare case of pseudo-aneurysm occurring after
superior thyroid trans-esophageal echocardiography (TEE) and external cardioversion. Singular
occurrence in otolaryngology, if not recognized early a pseudo-aneurysm can result in dramatic events
such cataclysmic bleeding or acute occlusion of the upper airway