胸膜孤立性纤维瘤：磁共振成像表现及强化方式
Solitary fibrous tumor of the pleura: MR appearance and enhancement pattern.
作者信息
Tateishi Ukihide, Nishihara Hiroshi, Morikawa Toshiaki, Miyasaka Kazuo
机构信息
Division of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
出版信息
J Comput Assist Tomogr. 2002 Mar-Apr;26(2):174-9. doi: 10.1097/00004728-200203000-00002.
PURPOSE
The aim of the current study was to characterize the MR appearance of solitary fibrous tumor of the pleura (SFTP).
METHOD
Twenty-two consecutive patients with histologically confirmed SFTP were retrospectively evaluated with MRI.
RESULTS
Tumors demonstrated low signal intensity (n = 18, 82%), iso signal intensity (n = 2, 9%), and high signal intensity (n = 2, 9%) on T1-weighted images. On T2-weighted images, tumors were observed as low signal intensity (n = 10, 45%), high signal intensity (n = 2, 9%), and mixed signal intensity (n = 10, 45%). Solid component in the proliferation of tumor cells corresponded to low signal intensity in 12 tumors (55%) on T2-weighted images. On gadolinium-enhanced T1-weighted images, inhomogeneous enhancement (n = 18, 82%), nodular enhancement (n = 6, 27%), and homogeneous enhancement (n = 4, 18%) were observed. The enhanced lesion within the tumors had dense tumor tissue and dilated microvessels in the pathologic specimen.
CONCLUSION
SFTP shows variable appearance and enhancement pattern on MRI according to morphologic tumor heterogeneity.
目的
本研究旨在描述胸膜孤立性纤维瘤（SFTP）的磁共振成像（MR）表现。
方法
对22例经组织学证实的SFTP患者进行回顾性MRI评估。
结果
肿瘤在T1加权像上表现为低信号强度（n = 18，82%）、等信号强度（n = 2，9%）和高信号强度（n = 2，9%）。在T2加权像上，肿瘤表现为低信号强度（n = 10，45%）、高信号强度（n = 2，9%）和混合信号强度（n = 10，45%）。肿瘤细胞增殖中的实性成分在T2加权像上对应12个肿瘤（55%）的低信号强度。在钆增强T1加权像上，观察到不均匀强化（n = 18，82%）、结节状强化（n = 6，27%）和均匀强化（n = 4，18%）。病理标本显示肿瘤内强化病变有致密的肿瘤组织和扩张的微血管。
结论
根据肿瘤形态学异质性，SFTP在MRI上表现出可变的外观和强化模式。
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