SENTINEL TRANSORAL HEMORRHAGE FROM A PSEUDOANEURYSM OF THE INTERNAL MAXILLARY ARTERY - A COMPLICATION OF CT-GUIDED BIOPSY OF THE MASTICATORSPACE

A patient presented with transoral hemorrhage 3 months after CT-guided percutaneous biopsy of the masticator space, prompting concern about sentinel hemorrhage from impending carotid artery rupture related to p rior radical head and neck surgery and radiation therapy. Angiographic evaluation showed the internal carotid artery to be normal but demons trated a pseudoaneurysm of the buccal branch of the internal maxillary artery exactly corresponding to the site of prior fine-needle biopsy.