Surgical Approach for Treatment of Carcinoma of the Anterior Wall of the External Auditory Canal

作者：Seiji Hosokawa, Kunihiro Mizuta, Goro Takahashi, Jun Okamura, Yoshinori Takizawa, Kumiko Hosokawa, Takashi Yamatodani, Hiroyuki Mineta · 发表于：Otology & Neurotology · 年份：2012 · DOI：10.1097/mao.0b013e318245ccbf · 被引用次数：24 · 研究领域：Ear and Head Tumors、Head and Neck Surgical Oncology、Head and Neck Cancer Studies

OBJECTIVE: Treatment outcomes for carcinomas of the external auditory canal (EAC) were evaluated regarding radiologic and pathologic factors. STUDY DESIGN: Retrospective case review. SETTING: University hospital. PATIENTS: Fifteen patients histologically diagnosed with carcinomas of the EAC. INTERVENTION: A radiologic and pathologic analysis was performed on these patients histologically diagnosed with carcinomas of the EAC and treated surgically at our institution. We evaluated the size of focal defects in the anteroinferior (AI) canal wall of the tympanic bone with preoperative computed tomographic (CT) scans. Histopathologic slides for the same patients were evaluated according to the same criteria as the CT scans. MAIN OUTCOME MEASURE: Pathologic features and estimated survival rate. RESULTS: Preoperative CT scans of 15 temporal bones demonstrated an AI canal wall defect ranging from less than 1 mm to full-thickness destruction. Six of 15 patients had an AI canal wall defect greater than 2 mm on preoperative CT scan. Pathologic findings in these 6 cases showed extension of the tumor through the AI defect into the anterior soft tissues. Information on patients' survival status was obtained after a median follow-up period of 78.3 months (range, 18-151 mo). CONCLUSION: Preoperative CT can be used to accurately determine the pathologic extent of tumor invasion in carcinomas of the EAC. This diagnostic method facilitates exchange of accurate clinical data in a comparable form ...