Successfully treated massive epistaxis in a patient with internal carotid artery pseudoaneurysm.

Approximately 60% of the adult population experience at least 1 episode of epistaxis in their lifetimes. Because the blood supply of the nasal mucosa ultimately originates from the carotid arteries, acute epistaxis is potentially very serious. Sudden and massive epistaxis is usually fatal, and it is one of the most dreaded complications after radiotherapy (RT) among patients with cancer of the head and neck region. To the best of our knowledge, few patients who are alive have been presented with massive epistaxis due to ruptured internal carotid artery pseudoaneurysm associated with RT in the literature. Herein, we reported a successfully treated massive epistaxis case of ruptured internal carotid artery pseudoaneurysm associated with RT in a patient who has nasopharyngeal carcinoma.