Sheppard D G, Kim E E, Yasko A W, Ayala A
Department of Diagnostic Radiology, University of Texas M.D. Anderson Cancer Center, Houston 77030, USA.
Clin Imaging. 1998 Nov-Dec;22(6):428-30. doi: 10.1016/s0899-7071(98)00030-8.
The localized form of a giant-cell tumor of the tendon sheath is uncommon and rarely intraarticular. While the sonographic findings are nonspecific, the magnetic resonance (MR) findings can be diagnostic. Relatively homogeneous iso- or marginal hyperintensity on T2-weighted sequences, lack of susceptibility effects due to hemosiderin, the demonstration of a fibrous capsule and the absence of adjacent joint involvement may help to differentiate localized and diffuse forms of giant-cell tumors of tendon sheaths and pigmented villonodular synovitis.
腱鞘巨细胞瘤的局限性形式并不常见，很少累及关节内。虽然超声检查结果不具有特异性，但磁共振成像（MR）结果可用于诊断。在T2加权序列上相对均匀的等信号或边缘高信号、无含铁血黄素引起的磁敏感效应、显示有纤维性包膜以及无相邻关节受累，可能有助于区分腱鞘巨细胞瘤的局限性和弥漫性形式以及色素沉着绒毛结节性滑膜炎。
