Department of Otorhinolaryngology-Head and Neck Surgery, Chungnam National University College of Medicine, Daejeon, South Korea.
Department of Otorhinolaryngology, Ilsan Paik Hospital, Inje University College of Medicine, Ilsan, South Korea.
Head Neck. 2021 Sep;43(9):2655-2662. doi: 10.1002/hed.26729. Epub 2021 May 3.
The importance of elective parotidectomy in early-stage squamous cell carcinoma (SCC) of the external auditory canal (EAC) is not well established.
A retrospective study of 43 patients with early-stage SCC of the EAC who underwent parotidectomy in conjunction with lateral temporal bone resection at three centers.
Overall occult parotid involvement (OPI) rate in early-stage SCC of the EAC was 13.9% (6/43). When considering both the anteroposterior position and the bony-cartilaginous position, patients with SCC in both the anterior wall and cartilaginous portion exhibited significantly higher OPI than other locations (37.5% vs. 0%, p = 0.001), with an increase in the OPI predictive value.
SCC located in either the anterior wall of the EAC or the cartilaginous portion of the EAC or both simultaneously showed a high prevalence of OPI, and elective parotidectomy should be considered in those patients.
在外耳道（EAC）早期鳞状细胞癌（SCC）中，选择性腮腺切除术的重要性尚未得到充分证实。
对在三个中心接受腮腺切除术联合颞骨侧方切除术的 43 例 EAC 早期 SCC 患者进行回顾性研究。
EAC 早期 SCC 的总体隐匿性腮腺受累（OPI）率为 13.9%（6/43）。当同时考虑前后位置和骨软骨位置时，前壁和软骨部分均有 SCC 的患者的 OPI 明显高于其他部位（37.5% vs. 0%，p=0.001），且 OPI 的预测值增加。
EAC 的前壁或软骨部分或两者同时存在 SCC 的患者，OPI 发生率较高，应考虑选择性腮腺切除术。
