Martin C, Martin H, Perron X, Prades J M
Service ORL, Hôpital Bellevue, Saint-Etienne.
Ann Otolaryngol Chir Cervicofac. 1989;106(7):523-4.
Certain fixed adherent retraction pockets especially in the posterior aspect of the tympanic cavity and certain cholesteatomas are difficult to treat even after a posterior tympanotomy has been performed. Using 70 degrees and especially 30 degrees optical systems can be of great value as the lesions can be perfectly visualised and endoscopic copho-surgery itself can even be carried out. Study of 27 cases of fixed retraction pockets and 14 cholesteatomas which underwent microscopic surgery but with optical verification of the operative cavity demonstrated the value of this technique. The safety of the method even allows the exclusive use of the endaural route in cases which have up to now required a posterior approach and posterior tympanotomy.
某些固定的粘连性回缩袋，尤其是鼓室后部的，以及某些胆脂瘤，即使在进行了后鼓室切开术后也难以治疗。使用70度尤其是30度的光学系统可能具有很大价值，因为病变可以得到完美可视化，甚至可以进行内镜辅助耳科手术。对27例固定回缩袋和14例胆脂瘤进行显微镜手术，但对术腔进行光学验证的研究证明了该技术的价值。该方法的安全性甚至允许在迄今为止需要后入路和后鼓室切开术的病例中仅采用耳内入路。
