骨内腱鞘囊肿的影像学表现

Image appearances of intraosseous ganglion

目的:探讨骨内腱鞘囊肿的影像学表现及其诊断价值。方法:回顾性分析经病理证实的23例骨内腱鞘囊肿的临床及影像资料,X线平片检查15例,螺旋CT检查9例,MRI检查6例。4例同时行X线平片和CT检查,3例同时行X线平片和MRI检查。结果:X线、CT表现为骨内邻近关节面的类圆形囊样透亮区,边界清楚,有薄层硬化边,3例CT及其三维重建显示病灶与关节腔相通。MRI在T1WI呈低信号,T2WI和脂肪抑制T2表现为高信号,MRI显示病灶与关节腔相通2例。结论:骨内腱鞘囊肿影像学表现有一定特征,CT及其三维重建对病灶细节显示清晰,可作为首选检查方法。

Objective： To investigate the imaging features and their diagnostic value of intraosseous ganglion.Methods： Clinical and imaging features of 23 cases with intraosseous ganglion were retrospectively analyzed.15 cases were examined with X-ray.9 cases were examined with CT and 6 cases with MRI.4 cases were examined with both of X-ray and CT,and 3 cases with both of X-ray and MRI.Results： Radiographs included a unilocular cyst surround by a full rim of sclerotic bone in the subchondral epiphysis without any signs of degenerative joint disease.CT with 3D reformat images showed an intraosseous ganglion communicating with adjacent joint in 3 patients.Intraosseous ganglion was seen as low signal on T1WI,high signal on T2WI and STIR.MRI showed an intraosseous ganglion communicating with adjacent joint in 2 patients.Conclusion： Intraosseous ganglion cysts have characteristic imaging features.CT with 3D reformat images is the first choice because of the advantage of details.