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目的 对微探头超声内镜 (MPS)检查与CT扫描诊断食管癌的价值进行比较。方法 5例食管癌术前行MPS检查和CT扫描并与术后病理结果比较。结果 MPS检查能检出所有病例的食管癌病灶 ,包括 1例黏膜层癌及 2例黏膜下层癌 ,癌肿浸润深度诊断准确率 82 % ,诊断纵隔结构受侵准确率 5 0 % ,诊断区域淋巴结转移敏感性 89% ,特异性 78% ,而对纵隔内远处转移的淋巴结均未能探及。CT扫描能发现 83 %的食管癌病灶 ,但不能准确诊断癌肿浸润深度 ,诊断纵隔结构受侵准确率 75 % ,发现区域淋巴结转移敏感性 92 % ,特异性 80 % ,对纵隔内远处淋巴结转移诊断准确率 80 %。结论 MPS检查结合活检是目前食管癌最有价值的腔内检查手段 ,CT扫描在评价纵隔内结构受侵及远处淋巴结转移的意义较大
Objective To compare the value of microprobe ultrasound endoscopy (MPS) and CT scan in the diagnosis of esophageal cancer. Methods Five patients with esophageal carcinoma underwent MPS examination and CT scan before operation and compared with postoperative pathological results. Results The MPS examination could detect esophageal cancer lesions in all cases, including one case of mucosal layer cancer and two cases of submucosal cancer. The diagnostic accuracy of invasive depth of cancer was 82%, the accuracy of invasive diagnosis of mediastinal structure was 50%, and regional lymph nodes were diagnosed. The sensitivity of metastasis was 89% and specificity was 78%. Lymph nodes distant metastatic in the mediastinum were not detected. CT scan can find 83% of esophageal cancer lesions, but can not accurately diagnose the depth of invasion of cancer, diagnosis of invasion of the mediastinal structure accuracy rate of 75%, found that the regional lymph node metastasis sensitivity 92%, specificity 80%, to the distal mediastinal lymph nodes The diagnostic accuracy of metastasis was 80%. Conclusion MPS combined with biopsy is the most valuable intracavity examination method for esophageal cancer. CT scan has a greater significance in assessing invasion of the mediastinum and distant lymph node metastasis.