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目的：评价ＣＴ在乳癌腋窝淋巴结诊断中的价值。材料与方法：２０例乳癌患者在术前做了ＣＴ扫描，并和病理结果作了比较，腋窝淋巴结短径≥０．５ｃｍ认为是异常。结果：ＣＴ检出１１例有腋窝淋巴结增大，病理均证实为转移；４例病理为转移而ＣＴ却阴性；临床检查时仅１０例可扪及腋窝淋巴结。ＣＴ的真阳性率为７３％，假阴性率为２７％，敏感性１００％。结论：虽然ＣＴ较优于临床检查，但仍不是一种术前预计腋窝淋巴结是否受累的准确方法，其主要原因是假阴性率较高。
Objective: To evaluate the value of CT in the diagnosis of axillary lymph node in breast cancer. Materials and Methods: Twenty patients with breast cancer underwent CT scan before operation and compared with pathological results. The short diameter of axillary lymph node ≥0.5cm was considered abnormal. RESULTS: 11 cases of axillary lymph node enlargement were detected by CT, and pathology was confirmed as metastasis; 4 cases had pathological metastasis but CT was negative; only 10 cases of axillary and axillary lymph nodes were detected during clinical examination. The true positive rate of CT was 73%, the false negative rate was 27%, and the sensitivity was 100%. Conclusion: Although CT is superior to clinical examination, it is still not an accurate method for estimating whether axillary lymph nodes are involved before surgery. The main reason is that the false negative rate is high.