Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan.
Eur Arch Otorhinolaryngol. 2021 Apr;278(4):1283-1288. doi: 10.1007/s00405-020-06594-4. Epub 2021 Jan 13.
30° and 45° endoscopes are commonly used, but there are few reports about the use of 70° endoscopes for ear surgery.
The use of 70° endoscopes made it possible to resect cholesteatomas without removing extensive regions of the external ear canal, which facilitated reconstruction, as the areas that needed to be reconstructed were smaller.
None of the 34 patients who underwent this procedure for pars flaccida cholesteatoma suffered recurrence. Therefore, we consider that the procedure is useful. A further study of the postoperative outcomes of this procedure should be conducted.
30°和 45°内窥镜通常被使用，但有关使用 70°内窥镜进行耳部手术的报道较少。
使用 70°内窥镜可以在不切除外耳道广泛区域的情况下切除胆脂瘤，这有助于重建，因为需要重建的区域较小。
34 例施行该术式治疗鼓膜松弛部胆脂瘤的患者均未复发。因此，我们认为该术式是有用的。应该进一步研究该术式的术后效果。
