中文摘要：

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。方法：回顾性分析10例经手术病理证实的腱鞘巨细胞瘤的X线平片及MRI表现,其中10例行X线平片检查,8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轻度侵蚀破坏。MRI表现为相应部位软组织肿块影,T1WI多呈较低信号,内可见条片状更低信号影,增强后强化明显;T2WI呈高低混杂信号影;病灶与邻近肌腱关系密切,其中一例包绕指屈肌腱蔓状生长;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。

英文摘要：

Objective： To study the imaging features of Giant cell tumor of tendon sheath（GCTTS）.Methods： 10 cases with surgery and pathology proved GCTTS were retrospectively reviewed.Routine radiograph were carried out in all of the 10 patients,and 8 had plain and contrast-enhanced MR imaging.Results： X plain film findings were soft-tissue swelling without osseous involvement or slight bone erosions.At MR imaging,the lesions were heterogeneously iso-/hypo-intense on T1 weighted images,and heterogeneously hyper-/hypo-intense 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 partially/completely enveloping it.Conclusions： The imaging findings of GCTTS have some certain characteristics.