Blow out carotid is characteristically seen with -

History of radiation exposure followed by radical neck dissection increases the risk of carotid blowout in head and neck cancers. • Carotid blowout refers to rupture of the carotid and its branches • It is one of the most devastating complications associated with therapy for head and neck cancers • Carotid blowout tends to occur in head and neck cancer, radiation induced necrosis, recurrent tumors or pharynocutaneous fistulas • The clinical signs and symptoms related to rupture of carotid artery have been referred as carotid blowout syndrome • Reported morbidity and mortality rates are 40% and 60% respectively.