Arriaga M, Curtin H D, Takahashi H, Kamerer D B
House Ear Institute, University of Pittsburgh School of Medicine, PA.
Otolaryngol Head Neck Surg. 1991 Jul;105(1):6-11. doi: 10.1177/019459989110500102.
Survival is related to the pathologic extent of tumor in external auditory meatus (EAM) carcinoma. This study assesses the validity of preoperative CT scans in staging EAM carcinoma. The accuracy of staging EAM carcinoma with preoperative CT scans was evaluated by comparing radiography and histopathology. Patients who received preoperative CT scan were selected from a retrospective series of 35 temporal bone resections for EAM squamous cell carcinoma. The CT scans were systematically reviewed for tumor involvement in 12 anatomic areas. The histopathology slides for the corresponding patients were reviewed according to the same criteria. CT scan findings accurately diagnosed the extent of tumor involvement identified during histopathologic examination. These tumors demonstrated the capacity to spread along existing anatomic pathways as well as direct bone erosion. We conclude that preoperative CT scans accurately stage EAM squamous cell carcinoma.
外耳道（EAM）癌患者的生存率与肿瘤的病理范围相关。本研究评估术前CT扫描在外耳道癌分期中的有效性。通过比较影像学检查结果和组织病理学结果，评估术前CT扫描对外耳道癌进行分期的准确性。从35例因外耳道鳞状细胞癌行颞骨切除术的回顾性病例系列中选取接受术前CT扫描的患者。对CT扫描进行系统评估，观察肿瘤在12个解剖区域的累及情况。根据相同标准对相应患者的组织病理学切片进行复查。CT扫描结果准确诊断了组织病理学检查中确定的肿瘤累及范围。这些肿瘤显示出沿现有解剖途径扩散以及直接骨质侵蚀的能力。我们得出结论，术前CT扫描能够准确对外耳道鳞状细胞癌进行分期。
