Sham J S, Chan F L, Lau W H, Choi P H, Choy D
Department of Radiotherapy, Queen Mary Hospital, Hong Kong.
Clin Imaging. 1989 Dec;13(4):299-304. doi: 10.1016/0899-7071(89)90063-6.
Five patients with primary mediastinal endodermal sinus tumor have been evaluated by computed tomography (CT). The tumors were all located in the anterior mediastinum. Prechemotherapy CT demonstrated large, irregularly enhancing inhomogeneous masses without fat components. Calcification was visualized in two tumors. Some parts of the pleura-lung interface were irregular in four cases. Obliteration of fat planes to pericardium and chest wall was evident in all cases, and there was infiltration of intercostal muscles in four. Postchemotherapy CT in two patients who responded to chemotherapy showed either newly developed cystic lesions or cystic change of the original mediastinal mass. The cystic masses had more regular borders, a homogeneous hypodense center, and a smooth peripheral rim of contrast-enhancing tissue.
五例原发性纵隔内胚窦瘤患者接受了计算机断层扫描（CT）评估。肿瘤均位于前纵隔。化疗前CT显示为大的、不规则强化的不均匀肿块，无脂肪成分。两例肿瘤可见钙化。四例患者胸膜-肺界面的某些部分不规则。所有病例均可见心包和胸壁脂肪平面消失，四例有肋间肌浸润。两名对化疗有反应的患者化疗后CT显示，要么出现新的囊性病变，要么原纵隔肿块出现囊性改变。囊性肿块边界更规则，中心密度均匀减低，周围有一圈光滑的强化组织边缘。
