孤立性肺结节的MRI鉴别诊断

MRI of Solitary Pulmonary Nodules in the Differential Diagnosis

目的探讨MRI对孤立性肺结节的诊断价值。方法搜集并分析30例直径<3cm的孤立性肺结节MRI表现,并评价肺结节良恶性鉴别诊断上的价值,对其表现进行回顾性分析。结果 30例孤立性肺结节病例均有MRI检查。其中肺癌12例,包括鳞癌5例,腺癌4例,小细胞癌3例。病灶直径1.5～3cm。良性病变共l8例,其中结核球4例,炎症4例,错构瘤4例,炎性假瘤3例,囊肿3例。结论分析MRI征象,仔细观察病灶结构及周围改变,并紧密结合临床资料有助于提高本病诊断的准确性。

Objective The purpose of this study was to benign from Discuss MRI with in isolation of the SPN and diagnosis.Methods To collect and analyze 30 solitary pulmonary nodules with diameter3cm were performed MRI findings and to evaluate the value of this method in the differentiating benign from malignant pulmonary nodules to use logistic regression.Results 30 cases of solitary pulmonary nodule patients had MRI examination.Of which 12 cases of malignant nodules,including： squamous cell carcinomas（n=5）,adenocarcinoma（n=4）,small cell lung carcinoma（n=3）.Lesion diameter 1.5 ~ 3cm,A total of l8 patients with benign lesions,Including： Tuberculoma（n=4）,Inflammation（n=4）,hamartoma（n=4）,Inflammatory pseudotumor（n=3）,Cyst（n=3）.Tuberculoma in left upper lobe is more common（3/4,75%）;Hamartoma were found in the left lung;Have one case of inflammation of the left leaf;Inflammatory pseudotumor of the right lung and the cyst were found in.A total of 12 cases of malignant tumor.Including： squamous cell carcinomas（n=5）,adenocarcinoma（n=4）,small cell lung carcinoma（n=3）.Of which 11 cases not only the whole boundary（11/12,92%）,8 cases were in the middle signal T1WI（3/4,75%）,11 cases T2WI showed high signal（11/12,92%）.Conclusion Analysis to MRI signal,carefully observed lesions structure and around change,and integrated clinical data will help improve the accuracy of SPN diagnosis.