段庆红，王学建，赵震奇<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

（贵阳医学院附属医院放射科 贵州 贵阳 550004）

Image Findings of Synovial Sarcoma

DUAN Qing－hong，WANG Xue－jian，ZHAO Zhen－qi

（Department of Radiology，The Affiliated Hospital，Guiyang Medical College，Guiyang Guizhou 550004，China）

ABSTRACT

　　Objective：To investigate the image characteristics of Synovial Sarcoma，and improve the diagnostic accuracy.

　　Methods：The clinical materials and image findings of synovial sacoma proved by pathology were retrospectively analyzed in 13 cases.

　　Results：1. Most synovial sarcomas located in close proximity to a joint，especially a large joint of lower limbs. 2. The mass diameter was usually more than 5cm，and most masses present moderate density，and some with calcification inside it on X－Ray films. 3. Most masses density was not homogeneous and slightly lower than that of the muscle on CT，the demarcation was clear or not. 4. On T2WI /STIR of MRI，most tumours presented slightly hyperintense “cobble”nodules，with hypointense septa among the nodules. After contrast，the nodules were unenhanced or enhanced slightly，the septa were markedly enhanced.

　　Conclusion：Some image finding’s features of synovial sarcoma，especially on MRI，are helpful for the diagnosis of it.

　　Key words：Synovial sarcoma Image findings