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目的:本文通过对良、恶性胸腺瘤的CT特征分析,试图提高对二者CT鉴别诊断的准确性。材料和方法:回顾性地分析经手术病理证实的胸腺瘤,其中良性14例,恶性19例。结果:良性胸腺瘤(14例)平均直径4.5cm,呈类圆形。除2例有点状钙化外,密度均匀,包膜完整,与周围大血管呈锐角。恶性胸腺瘤(19例)平均直径7.0cm,仅6例呈类圆型,9例分叶状,4例呈不规则浸润生长;6例包膜完整,9例不完整,4例无包膜;密度均匀14例,5例不均匀;9例与周围大血管呈锐角,5例呈钝角,5例包绕大血管。结论:CT诊断恶性胸腺瘤的可信性相当高,本文达100％,而良性胸腺瘤的相对较低,本文为77％。
Objective: To analyze the CT features of benign and malignant thymoma in order to improve the accuracy of CT differential diagnosis. Materials and Methods: Retrospectively analyzed thymoma confirmed by pathology, including 14 cases of benign and 19 cases of malignant. RESULTS: Benign thymomas (14 cases) had an average diameter of 4.5 cm and were round in shape. Except for 2 cases of calcification, the density was uniform, the capsule was complete, and it was an acute angle with the surrounding large vessels. The average diameter of malignant thymoma (19 cases) was 7.0cm. Only 6 cases were round type, 9 cases were lobulated, 4 cases showed irregular infiltration and growth; 6 cases were complete envelope, 9 cases were incomplete, and 4 cases were non-enveloped. Density was uniform in 14 cases, 5 cases were uneven; 9 cases showed acute angles with the surrounding great vessels, 5 cases were obtuse angles, and 5 cases surrounded large vessels. Conclusion: The reliability of CT in diagnosing malignant thymoma is quite high, this article is up to 100%, and the benign thymoma is relatively low, this article is 77%.