Treatment outcomes of the external auditory canal and temporal bone malignancy with dura invasion

Objectives This study aimed to evaluate the characteristics and surgical outcomes of patients with external auditory canal (EAC) temporal bone (TB) malignancy dura invasion. Methods The medical records EAC TB invasion were retrospectively reviewed. Survival (overall survival [OS], disease-specific [DSS], recurrence-free [RFS], distant metastasis-free [DMFS]) analyzed using Kaplan–Meier method. Results A total eight included in this study. median age at diagnosis was 49.5 years (range 12–74 years). follow-up periods 46.5 months. Histologically, four out diagnosed squamous cell carcinoma (SCC; 50%). 2-year OS DSS rates all 62.5%, those SCC 50% 66.7%, respectively; while RFS DMFS 37.5%. There one local recurrence resection site (12.5%), two regional neck nodal recurrences (25%), metastases (25%). Dura duroplasty areas not involved case. Conclusion In cancer invasion, radical surgery may show similar previous studies without site. Level evidence: IV