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目的:提高对颈动脉体瘤MRI表现的认识。方法:回顾性分析经手术病理证实的16例颈动脉体瘤(18个肿块)的MRI表现,所有病例常规行FSE T1WI和T2WI,12例行MRA检查,其中5例行3D PCA,8例行增强后MRA检查。结果:16例中14例(14/16)为单侧性,2例(2/16)为双侧性;右颈部病变7个(7/18),左颈部11个(11/18);肿瘤呈纺锤形或不规则形,其内信号欠均匀,1例有显著坏死区,13个(13/18)肿块在MR平扫出现“盐和胡椒征”,以“胡椒”表现最为显著;15个肿块(15/15)均有明显强化,其中8个肿块出现“盐和胡椒征”。12例患者(13个肿块)行MRA检查,显示颈总动脉分叉均有不同程度扩大。结论:根据肿瘤的部位、颈总动脉分叉角度的扩大和血管流空等表现,MRI可在手术前正确诊断颈动脉体瘤。
Objective: To improve the knowledge of carotid body tumor MRI findings. Methods: MRI findings of 16 cases of carotid body tumor (18 tumors) confirmed by surgery and pathology were retrospectively analyzed. FSE T1WI and T2WI were routinely performed in all cases. MRA was performed in 12 cases. Among them, 5 cases were performed 3D PCA and 8 cases were performed Enhanced MRA examination. Results: Of the 16 cases, 14 (14/16) were unilateral, 2 (2/16) were bilateral, 7 (7/18) were right neck lesions, 11 (11/18) ). The tumor showed a spindle or irregular shape. The signal was not uniform in one case. One case had a significant necrosis area. Thirteen (13/18) mass showed “Salt and Pepper sign” in MR plain scan, and “Pepper” Significant; 15 lumps (15/15) were significantly enhanced, of which 8 lumps appeared “salt and pepper sign.” MRA examination of 12 patients (13 masses) showed that the common carotid bifurcation enlarged to varying degrees. Conclusion: According to the location of the tumor, the enlargement of the common carotid bifurcation angle, and the appearance of venous blood flow, MRI can correctly diagnose carotid body tumor before operation.