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目的探讨手足部局限型腱鞘巨细胞瘤的X线及MRI表现。方法回顾性分析13例经手术及病理证实的手足部局限型腱鞘巨细胞瘤患者的X线及MRI资料并进行总结。13例均行MRI平扫检查,其中7例增强扫描。X线平片检查8例。结果 X线表现:平片8例中均见局限性软组织肿块,边界清楚,其中6例跨关节生长,2例未见骨质异常,4例合并邻近骨质压迫性缺损。MRI表现:13例平扫肿块位于骨旁、关节旁或肌腱旁,T1WI呈均匀低信号4例,不均匀低信号5例,等低信号4例;T2WI呈不均匀低信号9例,不均匀高信号4例。7例增强扫描,肿块呈明显均匀强化2例,明显不均匀强化5例。结论手足部局限型腱鞘巨细胞瘤MRI表现具有特征性,对其有定性诊断价值。
Objective To investigate the X-ray and MRI findings of localized tendon-sheath giant cell tumor of hand and foot. Methods The X-ray and MRI data of 13 patients with localized giant cell tumor of the tendon and the foot treated by surgery and pathology were analyzed retrospectively. 13 cases underwent MRI plain scan, of which 7 cases enhanced scan. X-ray plain film examination in 8 cases. Results X-ray findings: 8 cases of plain film showed limited soft tissue mass, the border is clear, of which 6 cases of cross-joint growth, 2 cases no bone abnormalities, 4 cases with adjacent bone compression defects. MRI manifestations: in 13 cases, the mass of the mass was located beside the periosteum, the joint or the tendon. T1WI showed uniform low signal in 4 cases, non-uniform low signal in 5 cases and low signal in 4 cases. T2WI showed nonuniform low signal in 9 cases, High signal in 4 cases. Seven cases of enhanced scanning, mass was significantly enhanced in 2 cases, significantly enhanced in 5 cases. Conclusion The MRI findings of localized giant cell tumor of the tendon and foot of the hand and foot are characteristic and have the value of qualitative diagnosis.