颈动脉瘤是一种少见的疾病,颈内动脉瘤尤为罕见。本文报告了2例颅外颈内动脉瘤,均为单侧,病因不明。其中有1例位于咽旁,曾误诊为扁桃体周围脓肿。本文对颈内动脉瘤的临床表现、诊断和鉴别诊断进行了讨论,阐明了颈动脉造影在诊断上的重要作用,并对手术进行了讨论,强调指出术前应常规训练颈总动脉。 Carotid aneurysm is a rare disease that is particularly rare in internal carotid aneurysms. This article reports 2 cases of extracranial carotid aneurysm, both unilateral, etiology is unknown. One of them was located on the parapharyngeal side and had been misdiagnosed as an abscess around the tonsil. This article discusses the clinical manifestations, diagnosis and differential diagnosis of carotid aneurysms. It illustrates the important role of carotid artery angiography in the diagnosis and discusses the surgery. It emphasizes that the common carotid artery should be routinely trained before surgery.