Nicolay Simon, De Foer Bert, Bernaerts Anja, Van Dinther Joost, Parizel Paul M
Department of Radiology, GZA Hospital Sint-Augustinus, Wilrijk, Belgium ; Department of Radiology, Antwerp University Hospital (UZA) and University of Antwerp (UA), Belgium.
Department of Radiology, GZA Hospital Sint-Augustinus, Wilrijk, Belgium.
Acta Radiol Short Rep. 2014 Nov 26;3(10):2047981614553695. doi: 10.1177/2047981614553695. eCollection 2014 Nov.
We report a case of a young woman with an aberrant right internal carotid artery (ICA) presenting as a retrotympanic reddish mass. This variant of the ICA represents the collateral pathway that is formed as a result of an embryological agenesis of the cervical segment of the ICA. The embryonic inferior tympanic artery is recruited to bypass the absent carotid segment. This hypertrophied vessel may be seen otoscopically and wrongfully considered to be a vascular middle ear tumor. Informing the otorhinolaryngologist of this important vascular variant not only obviates biopsy but also helps in careful preoperative planning of eventual middle ear procedures.
我们报告了一例年轻女性，其右侧颈内动脉（ICA）异常，表现为鼓室后红色肿块。这种ICA变异代表了由于ICA颈段胚胎发育不全而形成的侧支循环通路。胚胎期的下鼓室动脉被募集以绕过缺失的颈动脉段。在耳镜检查中可能会看到这条增粗的血管，并且可能被误诊为血管性中耳肿瘤。告知耳鼻喉科医生这种重要的血管变异不仅可以避免活检，还有助于在最终的中耳手术前进行仔细的术前规划。
