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目的 探讨CT增强扫描对鉴别良恶性肺结节的价值。方法 89例肺结节中 ,恶性 6 3例 (均为肺癌 ) ,良性 2 6例。分别于注射 10 0ml造影剂前及注射开始后的 35s、2min及 5min对病灶进行薄层平扫及增强扫描。观察病灶的强化程度及强化特征 ,并进行CT 病理对照研究。结果 肺癌的强化程度显著高于良性肺结节 (P <0 0 2 )。在强化特征方面 2 7例肺癌出现高密度点条征 ;5 1例肺癌和 4例良性结节强化不均匀 ;3例肺癌和 4例良性结节强化均匀 ;5例结核球和 1例炎性假瘤呈环状强化 ;12例结核球无强化。结论 CT增强扫描对良恶性肺结节的鉴别诊断有较重要的价值。
Objective To investigate the value of enhanced CT scan in differentiating benign and malignant pulmonary nodules. Methods 89 cases of pulmonary nodules, malignant 63 cases (all lung cancer), benign 26 cases. The thin-section plain scans and enhanced scans were performed on the lesions before injection of 100 ml contrast media and 35 seconds, 2 minutes, and 5 minutes after injection. Observe the enhancement of the lesion and its enhancement characteristics, and conduct a CT pathology control study. Results The degree of lung cancer enhancement was significantly higher than that of benign pulmonary nodules (P <0 0 2 ). In the enhanced features, 27 cases of lung cancer showed high-density dot markings; 51 cases of lung cancer and 4 cases of benign nodules were uneven; 3 cases of lung cancer and 4 cases of benign nodules were evenly enhanced; 5 cases of tuberculosis and 1 case of inflammatory Pseudotumor showed ring enhancement; 12 cases of tuberculosis no enhancement. Conclusion CT-enhanced CT scan has important value in differential diagnosis of benign and malignant pulmonary nodules.