Parotidectomy in the management of squamous cell carcinoma of the external auditory canal
| Autor: | Bingbin Xie, Meiqun Wang, Yuehui Liu, Shaorong Zhang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
Metastasis 03 medical and health sciences 0302 clinical medicine stomatognathic system Temporal bone medicine Humans 030223 otorhinolaryngology Survival rate Ear Neoplasms Neoplasm Staging Retrospective Studies business.industry Soft tissue General Medicine Parotidectomy medicine.disease Surgery Parotid gland Parotid Neoplasms stomatognathic diseases medicine.anatomical_structure Otorhinolaryngology Superficial Parotidectomy 030220 oncology & carcinogenesis Carcinoma Squamous Cell Neoplasm Recurrence Local business Ear Canal |
| Zdroj: | European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery. 278(5) |
| ISSN: | 1434-4726 |
| Popis: | To investigate optimal approaches for appropriate removal of the parotid gland in the management of squamous cell carcinoma (SCC) of the external auditory canal (EAC) at different tumor stages. In total, 39 patients with SCC of EAC treated at the Second Affiliated Hospital of Nanchang University between September 2003 and April 2019 were enrolled in this study. All patients underwent lateral temporal bone resection or subtotal temporal bone resection. Total parotidectomy was performed in patients with direct parotid invasion. Superficial parotidectomy was performed in patients with parotid node metastasis and patients with advanced stages without evidence of parotid involvement. The mean follow-up period was 68.7 months. Local recurrences or distant metastases occurred in five patients (12.8%). The 5-year overall survival rate was 78.4%. The 5-year survival rate was 100% in early stage (T1 and T2) patients, and 58.9 and 50.0% in patients staged III and IV, respectively. Direct parotid invasion was observed in only advanced-stage patients, while parotid node metastasis was noted in both early and advanced-stage patients preoperatively. There were no significant differences (χ2 = 0.1026; p = 0.749) between different tumor primary locations. However, soft tissue or preauricular organs became vulnerable once the anterior wall was infiltrated or eroded. Parotid management is important for achieving safer and wider tumor-free margins. Total parotidectomy should be mandatory for all advanced-staged (T3 and T4) patients. An optimal decision for parotid management in early stages depends on the infiltration or erosion of the anterior wall of the EAC. |
| Databáze: | OpenAIRE |
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