Katayama Yoshihiko, Kusagawa Hitoshi, Komada Takuya, Shomura Shin
Department of Thoracic Surgery, Matsusaka Chuo General Hospital, Matsusaka, Japan
Kyobu Geka. 2011 Feb;64(2):169-71.
A 44-year-old female was admitted with an abnormal left mediastinal shadow on chest roentgenography. Computed tomography (CT) revealed a mass lesion in the left superior mediastinum, which was not enhanced with contrast medium. Magnetic resonance imaging demonstrated equal signal intensity to that of the muscle on T1 weighted images, and higher signal intensity on T2 weighted images. As a cystic mediastinal tumor was suspected preoperatively, thoracoscopic excision was performed. The tumor was diagnosed as a cavernous hemangioma by pathology. A preoperative diagnosis is difficult because of a variable feature of image study. When the diagnosis of the cystic tumor of mediastinum is made, the diagnosis of mediastinal hemangioma should be kept in mind.
一名44岁女性因胸部X线片显示左纵隔阴影异常而入院。计算机断层扫描（CT）显示左上纵隔有一肿块病变，增强造影剂后无强化。磁共振成像显示在T1加权图像上信号强度与肌肉相同，在T2加权图像上信号强度更高。由于术前怀疑为囊性纵隔肿瘤，遂行胸腔镜切除术。病理诊断为海绵状血管瘤。由于影像学表现多样，术前诊断困难。当诊断为纵隔囊性肿瘤时，应考虑纵隔血管瘤的诊断。
