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Á¢¼ö¹øÈ£ - 210170   OTPP-06 
Clinical Characteristics of The External Auditory Canal Cancer
Department of Otorhinolaryngology-Head and Neck Surgery, The Catholic University of Korea College of Medicine, Seoul, Korea
JiSunKong, WooJinKim, ShiNaePark, EunJuJeon, SoYoungPark, BeomChoJun, DongHeeLee, SangWonYeo, KyoungHoPark
Objectives: Cancer of the external auditory canal (EAC) is a rare disease and the incidence appears less than 0.2% of all head and neck cancers. The many articles about EAC cancer were reported various survival rate from 10% (advanced stage) to 83% (early stage). This study aims analyze clinical presentation, treatment, histologic type and prognosis according to the Pittsburgh TMN stage in the EAC cancer. Methods:A retrospective analysis of 32 patients who diagnosed the EAC cancer in our department between 2004 and 2014 was performed with review of the charts. Median follow-up was 20 months (range, 3-145 months). Result:The mean age of the patients was 66 years and male was 14 case and female was 18 case. The representative symptoms were otorrhea, earfullness and hearing impairment. The early stage was 24 case (I=17 case and II=7 case) and advanced stage (III=3 case and IV=5 case) was 8 case. All patients did CT scan for reliable detection of bony erosion of the EAC and invasion of the facial canal and were treated surgically by wide excision or temporal bone resection including parotidectomy. The most common histological type was squamous cell carcinoma (19 case), followed by basal cell carcinoma (8 case), adenoid cystic carcinoma (2 case), verrucous carcinoma (1 case), sarcoma (1 case), undifferentiated carcinoma (1 case). 16 patients underwent adjuvant radiotherapy because to positive margin. The median survival rate was 51.5% and the complication rate showed 12.1%. Conclusion:The EAC cancer is important especially early detection and the prognosis depends on proper surgical treatment and adjuvant radiotherapy.


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