Spontaneous Oropharyngeal Bleeding Caused by Lingual Artery Pseudo-Aneurysm.

Spontaneous oropharyngeal bleeding is an uncommon but serious medical emergency mainly caused by accidental trauma or post-tonsillectomy. In extremely rare cases, it can be attributed to arterial pseudoaneurysm (PA) of head and neck vessels. The authors present the case of a young female patient presenting with recurring spontaneous oropharyngeal bleeding who was found to have a lingual artery PA on angiography. Due to the active nature of the hemorrhage and extensive blood loss, embolization of the tonsillar branch of the lingual artery was successfully performed. When evaluating patients with spontaneous oropharyngeal bleeding, one should suspect the presence of an arterial PA, especially if the bleeding recurs following initial conventional interventions.