手指血管球瘤的MRI诊断

MRI diagnosis of glomus tumors in finger

目的探讨手指血管球瘤的MRI诊断价值及技术方法。方法3例手指血管球瘤患者行MRI平扫,扫描序列包括:自旋回波序列(SET1WI,T1WI+FS),快速自旋回波序列(TSET2WI),快速小角度单次激发梯度回波序列加脂肪抑制(FLASH+FS)矢状位、冠状位、轴位以及增强扫描。结果3例患者的病程最短3年,最长9年。3例肿瘤均发生在环指,2例位于指骨远端掌侧面,1例位于甲床下。MRI上病变呈结节状,在T1WI上为等信号或稍低信号,在T2WI和FLASH上均为高信号。增强后病灶明显强化。结论MRI的T1WI、T2WI、FLASH+FS及增强扫描可以很好地显示手指血管球瘤这种微小病变,对本病的诊断及手术前定位有较高的临床应用价值。

Objective To evaluate the value and technical method of MRI diagnosis of glomus tumors in finger. Methods Three patients with gIomus tumors in finger were scanned with SE T1WI, T1WI＋FS, TSE T2WI, FLASH T2WI＋FS and contrast enhancement T1WI. Results The course of disease in three patients ranged from three years to nine years. The glomus tumors of all three patients were in the fourth finger. Two of them Iocated the pakn of phalanx far-end, and one of them located subungual. The lesions were tuberculous in MRI. They showed low or slight low signal in T1WI, and high signal in T2WI and FLASH T2WI. All focuses showed obviously enhancement after injecting Gd-DTPA. Conclusion SE T1WI, T2WI, FLASH＋FS and contrast enhancement can show clearly the tiny focus of glomus tumors in finger. MRI are of great value to diagnosis and location before operation in clinic.