Martin C, Martin H, Prades J M, Perron X, Bertholon P
Rev Laryngol Otol Rhinol (Bord). 1989;110(5):439-43.
43 cases of large labyrinthic fistulas caused by a cholesteatoma of the middle ear were studied (33 External Semi-circular Canal fistulas, 4 External Semi-circular Canal amputations with opening of the vestibule, 3 of the promontory, 2 of the oval window, 1 of the Semi-circular Canal). The audiometric, preoperative, radiological data was analyzed. The radiological exam is often disappointing for the average-sized fistulas. Preoperative labyrinthization is moderate for External Semi-circular Canal fistulas and even for certain vestibular amputations; it is often incomplete in the other locations. Systematic exeresis of the cholesteatoma matrix is recommended by the authors, at least for the External Semi-circular Canal fistulas as it is not generally accompanied by aggravation of the bony curve. In the other locations, surprising auditory preservations were observed. In conclusion, the presence of External Semi-circular Canal fistulas should not be a counter-indication for carrying out a ossiculoplasty.
对43例由中耳胆脂瘤引起的大型迷路瘘管进行了研究（33例外耳道半规管瘘管，4例外耳道半规管切断并开放前庭，3例岬部瘘管，2例卵圆窗瘘管，1例半规管瘘管）。分析了听力测定、术前及放射学数据。对于中等大小的瘘管，放射学检查结果常常令人失望。术前迷路形成在外耳道半规管瘘管甚至某些前庭切断术中为中度；在其他部位常常不完整。作者建议对胆脂瘤基质进行系统性切除，至少对外耳道半规管瘘管如此，因为其一般不会伴有骨曲线加重。在其他部位，观察到了令人惊讶的听力保留情况。总之，外耳道半规管瘘管的存在不应成为进行听骨链成形术的禁忌证。
