腱鞘巨细胞瘤的影像学诊断

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。

Imaging Diagnosis of Giant Cell Tumor of Tendon Sheath*

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.