骨内腱鞘囊肿的影像学诊断

目的：评价影像学检查对骨内腱鞘囊肿的诊断价值。方法：对17例经手术病理证实的腱鞘囊肿的影像学表现进行回顾性分析。12例摄了平片，CT检查8例，MRI检查6例。结果：17例骨内腱鞘囊肿中胫骨9例，股骨头3例，月骨2例，距骨、腕舟骨、足趾骨各1例。平片和CT多表现为邻近关节面的类圆形囊样透亮区，边界清晰，相邻关节间隙无明显改变。CT显示3个病灶通过裂隙与关节腔相通，CT值20—74HU。MRI检查多表现为长T1、长T2信号特点。结论：骨内腱鞘囊肿具有一定的影像学特征，X线检查简单易行，可作为首选检查方法，CT特别是MRI对骨内腱鞘囊肿诊断较平片有优势，综合影像学检查能提高骨内腱鞘囊肿诊断符合率。

Imaging research of intraosseous ganglion

Objective： To assess the value of imaging in diagnosing intraesseous ganglion. Methods： A retrospective analysis was made on imaging of 17 patients with pathologically approved. Imaging materials include radiographs （n = 12）, CT scan （n = 8）, MRI （n = 6）. Results： Of 17 cases, the lesions was locate at tibia in 9, at femoral head 4, at lunate 2, at talus 1, at scaphoid 1, and at phalange 1. On plain film and CT images included a unilocular cyst surround by a full rim of sclerotic bone without any degenerative joint disease. CT showed an intraesseoues ganglion communicating with adjacent jiont in 3 patients. CT values of the lesions were between 20 - 74 HU. MR images always showed a multicystic appearance with low intensity in T1 and high intensity in T2-weighted images. Conclusion： Intraosseous ganglion have some indentical characteristics. X-ray is simple and easy to perform and can be the first of choice of image examination. CT especially MRI is superior to plain film.