肺癌的影像学分期

Staging of Lung Cancer with Imaging

肺癌的分期明确了病变的范围 ,正确的分期对决定能否手术、选择治疗方法和预测预后都十分重要。本文介绍了新修订的国际抗癌协会(UICC)1997年肺癌分期法 ,包括TNM分期和临床分期 ,影像学方法是用于患者分期中的最重要的无创伤性技术 ,胸部和上腹部CT是其中的标准检查方法。本文详细叙述了CT在肺癌分期中的价值及其不足之处 ,其中主要描述了邻近结构的肺癌侵犯和淋巴结转移的影像表现。MRI在诊断肺上沟癌和纵隔受累上较CT为优。PET有望在将来成为分期中的优良技术。

The staging of lung cancer defines the extent of disease.Accurate staging is important to the selection of treatment regmens and prediction of the prognosis.The new revised staging method of lung cancer (1997,UICC) is introduced in this article.Imaging is the most importart noninvasive technique for lung cancer staging.The standard imaging technique for the staging of lung cancer is CT examination of chest and upper abdomen.The imaging appearences of neighboring structures' invasion and lymph node metastasis have been described.The merits and limits of CT in the staging of lung cancer are discussed in details.The role of MRI is limited,however,for the demonstration of superior sulcus tumor and mediastinal involvement MRI is better than CT.It may be proved ultimately that PET will be a good technique for lung cancer staging in the future.