title: Endovascular treatment of radiation-induced petrous internal carotid artery aneurysm presenting with acute haemorrhage. A report of two cases.
abstract: Haemorrhage from rupture of petrous ICA aneurysm can be life threatening and emergency treatment is required. We report 2 cases of radiation-induced petrous internal carotid artery (ICA) aneurysm presenting with acute haemorrhage (epistaxis and otorrhagia) after radiotherapy (RT) for nasopharyngeal carcinoma (NPC). Both patients had a history of RT treatment for NPC. The first patient, a 54-year-old man, presented with sudden severe epistaxis and haemorrhagic shock. The second patient, a 35-year-old man, presented with episodes of severe otorrhagia. The first patient was immediately resuscitated. Obliteration of the aneurysm was performed by endovascular occlusion of the ICA with Guglielmi detachable coils and fibered platinum coils. For the second patient, the aneurysm was treated by deploying a self-expandable stent across the aneurysm neck. In an emergency situation, ruptured petrous ICA aneurysm can be treated with endovascular occlusion of the ICA with microcoils if there is a good collateral blood flow. Alternatively, the aneurysm can be treated by deployment of a stent, which can induce stasis and eventual thrombosis of the aneurysm.
authors: Department of Neurosurgery, Queen Elizabeth Hospital, Kowloon, Hong Kong, China.
authors: K M
authors: KM
authors: Cheng
authors: C M
authors: CM
authors: Chan
authors: Y L
authors: YL
authors: Cheung
authors: H M
authors: HM
authors: Chiu
authors: K W
authors: KW
authors: Tang
authors: C K
authors: CK
authors: Law
mesh_terms: D000208:Acute Disease; D000328:Adult; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy*; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging / Q000528:radiation effects* / Q000601:surgery*; D004621:Embolization, Therapeutic; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy*; D020300:Intracranial Hemorrhages / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000532:radiotherapy*; D011859:Radiography