title: Sentinel transoral hemorrhage from a pseudoaneurysm of the internal maxillary artery: a complication of CT-guided biopsy of the masticator space.
abstract: 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 prior radical head and neck surgery and radiation therapy. Angiographic evaluation showed the internal carotid artery to be normal but demonstrated a pseudoaneurysm of the buccal branch of the internal maxillary artery exactly corresponding to the site of prior fine-needle biopsy.
authors.affiliation: Department of Radiology, Yale University School of Medicine, New Haven, Conn., USA.
authors.forename: A T
authors.initials: AT
authors.lastname: Walker
authors.forename: J C
authors.initials: JC
authors.lastname: Chaloupka
authors.forename: C M
authors.initials: CM
authors.lastname: Putman
authors.forename: J J
authors.initials: JJ
authors.lastname: Abrahams
authors.forename: D A
authors.initials: DA
authors.lastname: Ross
mesh_terms: D017541:Aneurysm, False / Q000000981:diagnostic imaging*; D000792:Angiography; D001707:Biopsy, Needle / Q000295:instrumentation*; D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000628:therapy; D003131:Combined Modality Therapy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008438:Maxillary Artery / Q000000981:diagnostic imaging / Q000293:injuries*; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000473:pathology* / Q000628:therapy; D009364:Neoplasm Recurrence, Local / Q000473:pathology* / Q000628:therapy; D006472:Oral Hemorrhage / Q000000981:diagnostic imaging* / Q000209:etiology; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*