腕骨骨内腱鞘囊肿的影像学表现

目的:评价腕骨骨内腱鞘囊肿的影像学特征.方法:分析8例经手术病理证实的发生于近排腕骨的骨内腱鞘囊肿的X线(7例)、CT(5例)和MRI(2例)表现,其中男性5例,女性3例,平均年龄28岁,发生于月骨6例,舟骨2例.结果:8例患者均表现为腕关节的慢性疼痛和不适.X线平片显示为月骨或舟骨内囊状溶骨性病变,边缘光滑,有硬化边包绕,病灶内无骨性分隔和钙化.CT图像上2例病灶可见骨皮质小缺损与关节腔相通.2例MRI显示T_1WI为低信号,T_2WI为高信号,信号均匀.结论:腕骨骨内腱鞘囊肿好发中青年,有腕关节慢性疼痛和不适病史,典型X线表现为发生于近排腕骨的边界清楚囊状病变,有硬化边.CT可清楚显示病灶是否与关节腔相通.病灶在MRI T_1WI为低信号,T_2WI为高信号.

Radiologic Appearances of Intraosseous Ganglion of Carpal Bones

Purpose: To observe the imaging features of intraosseous ganglion of the carpal bones. Methods: The radiography(n = 7), CT(n = 5) and MR(n = 2) in 8 cases of surgically confirmed in-traosseons ganglion were retrospectively reviewed. Results: Typical intraosseous ganglion was sharp margined and cystic lesion with sclerotic margin. Six cases showed no communication with joint, 2 cases displayed communication with joint through little cortical defect. CT was able to detect the lesions better than radiograph. Intraosseous ganglion demonstrated hypo- intense on MR T_1 WI images, and hyper -intense on T_2 WI images. Conclusion: Intraosseous ganglion of the carpal bone was typically seen as sharp margined cystic lesion in the proximal carpal row, which could be better demonstrated by CT and MR.