de Negreiros Jacinto, Sampaio André L L, Sesana Wilson E, Oliveira Carlos A
Department of Otolaryngology, Hospital Santa Luzia, Brasília University Medical School, Brasília, Brazil.
Ann Otol Rhinol Laryngol. 2008 Sep;117(9):708-10. doi: 10.1177/000348940811700914.
Pneumolabyrinth is a condition in which air is present in the vestibule and/or in the cochlea. Air inside the inner ear structures is uncommon, and is not detected even in otic capsule-violating fractures or in transverse fractures of the temporal bone. It is rarely described in the literature. We present a longitudinal computed tomography (CT) study of a significant pneumolabyrinth due to temporal bone trauma in a 31-year-old man. Routine CT of the cranium performed 3 hours after the accident showed air inside the vestibule (pneumolabyrinth). Two days later, a new CT study was performed. The air in the vestibule was partially resorbed. There was opacity over the oval window niche and the promontory. Thirteen months after the initial head trauma, another CT examination showed a fracture line running from the vestibule to the posterior wall of the petrous bone. The patient had profound sensorineural hearing loss after the trauma, and the pneumolabyrinth cleared over a few months. Surgical treatment was not indicated.
中耳迷路积气是一种在前庭和/或耳蜗中存在空气的病症。内耳结构内出现空气的情况并不常见，即使在侵犯耳囊的骨折或颞骨横行骨折中也未被检测到。文献中对此的描述很少。我们展示了一名31岁男性因颞骨外伤导致明显中耳迷路积气的纵向计算机断层扫描（CT）研究。事故发生3小时后进行的常规头颅CT显示前庭内有空气（中耳迷路积气）。两天后，进行了新的CT检查。前庭内的空气部分被吸收。卵圆窗龛和岬部出现了密度增高影。在初次头部外伤13个月后，另一次CT检查显示一条骨折线从前庭延伸至岩骨后壁。该患者外伤后出现重度感音神经性听力损失，中耳迷路积气在几个月内消散。未采取手术治疗。
