Localized tenosynovial giant cell tumor (GCT) or giant cell tumor of tendon sheath (GCTTS), is a benign nodular lesion that arises from the synovium of the tendon sheath of the hands and foot. GCTTS is characterized by the presence of multinucleated giant cells and proliferation of synovial-like mononuclear cells. A clinical diagnosis of GCTTS is kept as a differential when a firm, nodular mass shows decreased signal intensity on both T1-and T2-weighted MR imaging. Treatment is usually marginal excision of the mass.

中文翻译：

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腱鞘巨细胞瘤（局部腱鞘巨细胞瘤）的 FNAC 研究：临床放射学相关性和细胞病理学特征

局限性腱鞘巨细胞瘤（GCT）或腱鞘巨细胞瘤（GCTTS）是起源于手足腱鞘滑膜的良性结节性病变。GCTTS 的特征是多核巨细胞的存在和滑膜样单核细胞的增殖。当坚固的结节性肿块在 T1 和 T2 加权 MR 成像上均显示信号强度降低时，可将 GCTTS 的临床诊断作为鉴别诊断。治疗通常是边缘切除肿块。