Abstract
Background: There is no guideline for hearing compensation after temporal bone resection. This study aimed to retrospectively analyze surgical cases with reconstruction for hearing preservation after temporal bone malignancy resection and propose a new alternative to compensate for hearing loss. Methods: We retrospectively reviewed the medical records of 30 patients who underwent lateral temporal bone surgery for temporal bone malignancy at our institution and examined their hearing abilities after surgery. Result: The hearing outcomes of patients with an external auditory meatus reconstruction varied widely. The mean postoperative air–bone gap at 0.5, 1, 2, and 4 kHz ranged from 22.5 dB to 71.25 dB. On the other hand, the average difference between the aided sound field thresholds with cartilage conduction hearing aid and bone conduction thresholds at 0.5, 1, 2, and 4 kHz ranged from −3.75 to 41.25. More closely located auricular cartilage and temporal bone resulted in smaller differences between the aided sound field and bone conduction thresholds. Conclusions: There is still room for improvement of surgical techniques for reconstruction of the auditory meatus to preserve hearing after temporal bone resection. The cartilage conduction hearing aid may provide non-invasive postoperative hearing compensation after lateral temporal bone resection.
Highlights
Malignant tumors of the temporal bone are rare with an extremely low incidence rate [1,2]
To discuss options for hearing compensation after lateral temporal bone resection (LTBR), we report the postoperative hearing progression of cases with external auditory canal reconstruction after lateral temporal bone resection (LTBR) and the results of our examination of the effectiveness of the conduction hearing aid (CCHA) after LTBR
Our study included 30 patients that underwent LTBR, among which nine cases underwent the reconstruction of the external auditory meatus and tympanoplasty and 12 cases underwent the closure of the external auditory meatus
Summary
Malignant tumors of the temporal bone are rare with an extremely low incidence rate [1,2]. The most common histological type is squamous cell carcinoma, followed by adenoid cystic carcinoma. The establishment of clinical evidence is slow due to the rarity of this entity. Negative margin resection has been recognized to some extent as the standard of treatment. There is currently no global consensus on the treatment protocol. Each facility may have various treatment strategies to compensate for hearing loss after temporal bone resection. Patients with temporal bone malignancies are often provided with treatment options that result in hearing loss.
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