腱鞘巨细胞瘤的影像学诊断

Imaging diagnosis of fiant cell tumor of tendon sheath

目的分析腱鞘巨细胞瘤的影像学表现,以提高对该病的认识及影像诊断的准确率。方法回顾性分析14例经手术病理证实的腱鞘巨细胞瘤患者的X线平片及MRI表现,其中6例行X线平片检查,13例行MRI平扫及增强扫描。结果 X线平片显示局部稍高密度软组织肿块影,邻近骨质未见明显异常或局部侵蚀破坏;MRI表现为相应部位软组织信号肿块影,在T1WI多呈较低信号,内可见条片状更低信号影,T2WI呈高低混杂信号影,增强扫描强化明显,病灶与邻近肌腱或关节关系密切,局部骨皮质可受侵。结论腱鞘巨细胞瘤的影像学表现具有一定的特征性。

Objective To study the imaging features of Giant cell tumor of tendon sheath(GCTTS), in order to improve the recognition and the accuracy of imaging in the diagnosis of the disease. Methods 14 cases with surgery and pathology proved GCTTS were retrospectively reviewed. 6 patients were carried out X- ray plain film, and 13 had plain and contrast- enhanced MR imaging. Results X-ray plain film findings were soft-tissue swelling without osseous involvement or slight bone erosions.At MR imaging, the lesions were low signal and can be seen in the strip lower signal intensity on T1 weighted images, and the mixed signal intensity on T2 weighted images. The signal intensities tended to be moderately and heterogeneously enhanced following Gd-DTPA administration. The lesions were typically located in relation to a tendon or joint closely, local bone cortex involvement. Conclusions The imaging findings of GCTTS have some certain characteristics.