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It is very rare for extracranial carotid artery dissection to present as a carotid pseudoaneurysm. A delayed diagnosis and delayed treatment will lead to rupture of carotid pseudoaneurysm and massive hemorrhage and death. In this paper, we reviewed the progress of the disease in one patient and reviewed the relevant literature reports to understand the characteristics of the disease. The patient had two consultations within the otolaryngology department. The patient later showed signs of infection in the parapharyngeal space and then died of an aneurysmal rupture and massive hemorrhage., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.