摘要
目的分析前纵隔恶性肿瘤的MRI影像特点,提高MRI诊断与病理诊断符合率。方法收集我院经术后病理证实的前纵隔恶性肿瘤病例,分析MRI影像特点。全部患者均行胸部MRI平扫及增强检查。结果术前诊断为侵袭性胸腺瘤19例,术后病理为侵袭性胸腺瘤12例,生殖细胞瘤3例,纵隔型肺癌(鳞状细胞癌)2例,恶性淋巴瘤2例。MRI诊断与病理诊断符合率为63.2%,主要是无脂肪的生殖细胞瘤、纵隔型肺癌以及不典型的恶性淋巴瘤易误诊为侵袭性胸腺瘤。结论 MRI对前纵隔恶性肿瘤侵犯范围的评价具有显著优点,但是对于侵袭性胸腺瘤与其他恶性肿瘤的鉴别诊断仍存在一定困难,必须仔细分析其征象,密切结合临床病史及其他相关检查才可提高诊断准确率。
Objective To analyze the MRI findings and imaging features of anterior mediastinal tumors, and to improve the accuracy rate of diagnosis and pathological diagnosis. Methods Cases of anterior mediastinal tu- mors confirmed by postoperative pathology were collected analyzed for MRI imaging features. All the patients under- went chest MRI scan and enhanced scan. Results The 19 patients were diagnozed preoperatively as invasive thymo- ma, of which 12 were diagnosed as invasive thymoma by postoperative pathology, 3 as germ cell tumor, 2 as mediasti- hal type lung cancer （squamous cell carcinoma）, and 2 as malignant lymphoma. According to pathologic diagnosis, the coincidence rate of MR diagnosis was 63.2%. Germ cell tumors without fat, mediastinal lung cancer, and non-typical malignant lymphoma can be easily misdiagnosed as invasive thymoma. Conclusion MRI has significant advantages to the extent evaluation of the anterior mediastinal malignant tumor, but has difficulty in the differential diagnosis of invasive thymoma and other malignant tumors. Carefully analysis of clinical signs combined with the clinical history and other relevant inspection closely can improve the accuracy of diagnosis.
出处
《海南医学》
CAS
2013年第19期2861-2863,共3页
Hainan Medical Journal
关键词
前纵隔
恶性肿瘤
MRI诊断
误诊
Anterior mediastinum
Malignant tumor
MRI diagnosis
Misdiagnosis
