外淋巴瘘一直是有争议的论题。与外淋巴瘘相关的迷路积气罕见。通常由颞骨高分辨率 CT诊断。外淋巴瘘引起的迷路积气还与耳气压伤 ,医源性损伤 ,头颅外伤 ,慢性耳疾相关 ,也可自发产生。可能的气体进入部位有卵圆窗和圆窗龛 ,后半规管和圆窗之间的微小裂隙 ,以及窗前裂隙。本文 Perilymph fistula has been a controversial topic. Stasis associated with perilymph fistula is rare. Often diagnosed by temporal bone high resolution CT. Lungs caused by perilymphatic fistula are also associated with ear pressure, iatrogenic injury, cranial trauma, and chronic otorhilism, and can also occur spontaneously. Possible gas entry sites include oval and round windows, tiny cracks between the posterior semicircular canal and the round window, and fissures in the window. This article