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[目的]分析局限型腱鞘巨细胞瘤(L-GCTTS)的影像表现,提高对其的诊断水平。[方法]回顾性分析经病理证实的31例LGCTTS患者的X线、CT及MRI表现。[结果 ]17例X线显示稍高密度软组织肿块,其中7例跨关节生长,4例并相邻骨质压迫性吸收,边缘硬化,无骨膜反应,3例伴骨质小囊状破坏。10例X线未见异常表现。5例CT平扫显示软组织肿块和骨质改变较X线更清晰。14例MRI中,T1WI上10例呈等信号,4例呈等低信号;T2WI上信号高低混杂,12例T1WI及T2WI上均见低信号病灶。增强扫描后,8例呈明显强化,4例呈中度强化。[结论]腱鞘巨细胞瘤的影像学表现具有一定的特征性,且其对诊断、指导临床治疗和随访具有重要价值。
[Objective] To analyze the imaging manifestations of limited-type giant cell tumor of tendon sheath (L-GCTTS) and to improve its diagnosis. [Methods] X-ray, CT and MRI findings of 31 patients with LGCTTS confirmed by pathology were retrospectively analyzed. [Result] 17 cases of X-ray showed slightly high-density soft tissue mass. Among them, 7 cases grew across the joint, 4 cases had adjacent bone compressive absorption, marginal sclerosis, no periosteal reaction and 3 cases with small cystic degeneration. 10 cases of X-ray showed no abnormalities. 5 cases of CT scan show soft tissue mass and bone changes more clearly X-ray. Among 14 cases of MRI, 10 cases showed equal signal on T1WI and 4 cases showed low signal. The signal on T2WI was mixed, and the low signal lesions were found on 12 cases of T1WI and T2WI. After enhanced scan, 8 cases were significantly enhanced, 4 cases were moderately enhanced. [Conclusion] The imaging findings of tendon sheath giant cell tumor have certain characteristics, and it is of great value in diagnosing, guiding clinical treatment and follow-up.