NGHIÊN CỨU ĐẶC ĐIỂM LÂM SÀNG, CẬN LÂM SÀNG VÀ ĐÁNH GIÁ KẾT QUẢ ĐIỀU TRỊ CHÍT HẸP ỐNG TAI NGOÀI MẮC PHẢI

Abstract

Objectives: To describe the clinical and paraclinical characteristics and to evaluate surgical outcomes in patients with acquired external auditory canal stenosis.

Patients and methods: A retrospective and prospective descriptive study was conducted on 32 patients diagnosed with acquired external auditory canal stenosis and treated at the Vietnam National ENT Hospital between January 2020 and September 2023. Clinical presentation, imaging findings, intraoperative observations, and postoperative results were analyzed.

Results: The most common etiology was post-traumatic stenosis (68.75%), followed by external auditory canal tumors (21.88%). The majority of patients presented with conductive hearing loss (79.41%). Canalplasty alone was the primary surgical technique (68.8%), while modified radical mastoidectomy combined with canalplasty accounted for 24.96%. Postoperative outcomes were favorable, with significant improvement in auditory function and resolution of symptoms. However, restenosis occurred in 15.62% of cases, most frequently within the first year after surgery. Management included merocel stenting with or without local corticosteroid injection, and in some cases, revision surgery was required.

Conclusions: Acquired external auditory canal stenosis is most frequently associated with trauma and typically manifests with conductive hearing loss. Surgical intervention, particularly canalplasty, provides favorable anatomical and functional outcomes. Nevertheless, postoperative restenosis remains the most common complication, highlighting the need for strict follow-up and patient adherence to postoperative care.