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Πέμπτη 1 Ιουλίου 2021

Laceration of Aberrant Internal Carotid Artery Following Myringotomy: A Case Report and Review of Literature

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Ann Otol Rhinol Laryngol. 2021 Jul 1:34894211028468. doi: 10.1177/00034894211028468. Online ahead of print.

ABSTRACT

INTRODUCTION: The presence of an aberrant internal carotid artery (ICA) in the middle ear is rare. Patients may be asymptomatic or complain of conductive hearing loss, otalgia, pulsatile tinnitus, or aural fullness. Otoscopic exam findings can include a pulsating erythematous lesion on the tympanic membrane (TM). It may be misdiagnosed as a glomus tumor, heman gioma, or serous otitis media, or go unrecognized until surgical exploration. Early recognition is important as intraoperative discovery carries risk of iatrogenic injury, hemorrhage and subsequent neurologic sequelae. Prevention requires adequate preoperative suspicion and can be confirmed with radiologic examination via computed tomography (CT) scan or magnetic resonance angiography (MRA). Management of iatrogenic injury of an aberrant ICA can include packing, vessel embolization and/or surgical ligation.

PATIENT CASE: We report the case of an aberrant ICA injury in a pediatric patient undergoing a myringotomy with tube placement, who sustained neurologic deficits that eventually resolved following treatment with packing and coil embolization.

DISCUSSION AND CONCLUSIONS: An aberrant ICA can cause life-threatening complications without prior diagnosis in a routine myringotomy. Suspicious exam findings should prompt temporal bone CT to rule out aberrant ICA or other vasc ular pathology of the middle ear prior to surgery. In the case of iatrogenic injury of an aberrant ICA, there is no consensus in existing literature on optimal management. We reviewed 37 studies to compare therapeutic options and subsequent outcomes. Though complications are rare regardless of management, cases in which solely packing was utilized demonstrated an increased incidence of hemiparesis, aphasia, hearing loss, re-bleeding, and delayed pseudoaneurysm, as compared to an approach coupling packing with embolization or ligation, both of which have comparable outcomes.

PMID:34192882 | DOI:10.1177/00034894211028468

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