Leslie A, Fyfe E, Guest P, Goddard P, Kabala J E
Department of Clinical Radiology, Bristol Royal Infirmary, UK.
J Comput Assist Tomogr. 1999 Jan-Feb;23(1):43-9. doi: 10.1097/00004728-199901000-00010.
Our purpose was to assess the accuracy of CT and MRI in staging of squamous cell carcinoma (SCC) of the oral cavity and oropharynx.
Fifty-one episodes of primary and recurrent SCC were assessed with CT and MRI. The results were compared with pathological staging.
For staging primary tumours, the accuracy of MR was 77% and that of CT was 67%. For detecting recurrent tumour, the accuracy of MR was 89% and that of CT was 100%. For N-staging, nodal sites were divided, according to the site of the primary tumour, into high and low risk. Sensitivity for high risk sites was 60% for clinical assessment, 35% for CT, and 75% for MR. Negative predictive value (NPV) was < or = 50% for all methods. For low risk sites, the NPV was > or = 95% for all methods.
For T-staging, MR scanning is overall more accurate than CT. If degraded images and T1 tumours are excluded, the techniques are comparable. MR scanning is oversensitive for recurrent disease. For N-staging, all methods failed to detect small metastatic deposits.
我们的目的是评估CT和MRI在口腔及口咽鳞状细胞癌（SCC）分期中的准确性。
对51例原发性和复发性SCC进行CT和MRI评估。将结果与病理分期进行比较。
对于原发性肿瘤分期，MR的准确率为77%，CT为67%。对于检测复发性肿瘤，MR的准确率为89%，CT为100%。对于N分期，根据原发性肿瘤的部位将淋巴结部位分为高风险和低风险。高风险部位的临床评估敏感度为60%，CT为35%，MR为75%。所有方法的阴性预测值（NPV）均≤50%。对于低风险部位，所有方法的NPV均≥95%。
对于T分期，MR扫描总体上比CT更准确。如果排除图像质量差和T1期肿瘤，两种技术相当。MR扫描对复发性疾病过度敏感。对于N分期，所有方法均未能检测到小的转移灶。
