骨内腱鞘囊肿的影像学表现

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。

Image appearances of intraosseous ganglion

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.