重症肌无力患者胸腺病变的CT诊断

Computed Tomographic Diagnosis of Thymic A bnormahties in P atients with Myasthenia Gravis

分析报道了经手术病理证实的３７例重症肌无力患者的ＣＴ资料。ＣＴ诊断２７例胸腺瘤，病理证实２５例，其中良性胸腺瘤１９例，恶性胸腺瘤６例，另２例为胸腺增生。ＣＴ诊断１０例胸腺增生，病理证实７例，另３例为正常胸腺。笔者根据自家经验并结合文献指出：３０岁以上患者，ＣＴ能准确检出胸腺瘤且可靠地与胸腺增生及正常胸腺鉴别，为胸外科提供有价值的资料和手术指征；３０岁以下患者，ＣＴ对胸腺病变的诊断和鉴别有一定的限度。

The CT images in 37 patients with myasthenia gravis cenfirmed by surgery and p thology were analyzed.of 27 thymomas diagnosed by CT,19 benign,6 malignant thymomas and 2thymic hyperplasia were confirmed by pathology.Of l0 cases ofthymic hyperplasia diagnosed by CT,7 thymic hyperplasia and 3 nonnaI thymus were confinned pathologically. Based on our experience and the literature,the authors concluded that thVmoma can be detectedaccuratelv and differentiated from thymic hyperplasia and normaI thymus confidently by CT in patients over 30 years of age providing valuable inforn1ation and indication for operation。 CT has limitation in diagnosing and differentiating thymic abnormalities in patients under 30 years old.