Diagnosis and treatment of congenital stenosis of external auditory canal with external auditory canal cholesteatoma complicated with exudative effusion in the middle ear and mastoid process

Abstract

Background

The optimal timing for surgery to promote postoperative recovery in children with congenital stenosis of the external auditory canal with external auditory canal cholesteatoma, who are susceptible to exudative inflammation of middle ear and mastoid process, is still uncertain.

Objectives

To investigate the treatment of congenital stenosis of external auditory canal with external auditory canal cholesteatoma complicated with exudative inflammation.

Material and Methods

A retrospective analysis of 45 patients with congenital stenosis of external auditory canal with external auditory canal cholesteatoma complicated with mastoiditis. Based on whether effusion had resolved at the time of surgery, the patients were divided into two groups. Pure-tone audiometry tests were performed before and after surgery for both groups.

Results

The average postoperative duration of dry ear was 36.38 days in Group 1 and 47.90 days in Group 2 (p < 0.05). Among patients who underwent hearing reconstruction, the average air conduction threshold decreased by 15–36 dBHL in Group 1 and by 7–22 dBHL in Group 2 (p < 0.05).

Conclusions and significance

The postoperative outcomes of dry ear and hearing improvement can be enhanced by performing operation after effusion resolution in cases of congenital external auditory canal stenosis with external auditory canal cholesteatoma exudative inflammation.

Chinese Abstract

背景：先天性外耳道狭窄伴外耳道胆脂瘤儿童患者易患中耳和乳突渗出性炎症。对于这样的患者来说, 其最佳手术时机以取得术后恢复尚不确定。

目的：探讨伴外耳道胆脂瘤的先天性外耳道狭窄并发渗出性炎症的治疗。

材料与方法：回顾性分析45例先天性外耳道狭窄伴外耳道胆脂瘤合并乳突炎患者的临床资料。基于手术时积液是否消退, 将患者分为两组。两组患者术前和术后均接受纯音测听测试。

结果：术后干耳平均持续时间, 第1组为36.38天, 第2组为47.90天（p<0.05）。在接受听力重建的患者中, 平均空气传导阈值, 第1组降低了15–36 dBHL, 第2组降低了7–22 dBHL（p<0.05）。

结论和意义：对于先天性外耳道狭窄伴外耳道胆脂瘤渗出性炎症, 干耳和听力改善的术后结果可以通过积液消退后手术增强。

Keywords:

• Congenital ear malformations
• cholesteatoma
• middle ear inflammation
• middle ear surgery

Acknowledgements

We thank all the patients for their participation in the study.

Disclosure statement

No potential conflict of interest was reported by the authors.

Data availability statement

The data are available from the corresponding author on reasonable request.