Nakajima H, Usuki N, Fukuda H, Saiwai S, Miyamoto T
Department of Radiology, Kobe City General Hospital.
Nihon Igaku Hoshasen Gakkai Zasshi. 1991 Jul 25;51(7):759-63.
Magnetic resonance imaging (MRI) findings were reviewed in nine patients with histologically confirmed thymoma. The morphologic findings obtained by MRI were useful in distinguishing invasive from noninvasive thymoma. Invasive thymomas (2 cases) showed irregular contours and broad obliteration of the fatty plane between the mass and great vessels on T1-weighted coronary images. Perivascular infiltration shadow was considered to be characteristic of invasive thymoma. Noninvasive thymomas (7 cases) were round or oval in shape and showed slight obliteration of the fatty plane. In conclusion, MRI was helpful in differentiating invasive from noninvasive thymoma and defining the extent of thymoma.
对9例经组织学确诊的胸腺瘤患者的磁共振成像（MRI）结果进行了回顾。MRI获得的形态学结果有助于区分侵袭性胸腺瘤和非侵袭性胸腺瘤。侵袭性胸腺瘤（2例）在T1加权冠状位图像上显示轮廓不规则，肿块与大血管之间的脂肪平面广泛消失。血管周围浸润影被认为是侵袭性胸腺瘤的特征。非侵袭性胸腺瘤（7例）呈圆形或椭圆形，脂肪平面轻度消失。总之，MRI有助于区分侵袭性胸腺瘤和非侵袭性胸腺瘤，并确定胸腺瘤的范围。
