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13例侵袭性纤维瘤病的MRI表现 被引量:2

MRI manifestations of aggressive fibromatosis in 13 cases
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摘要 目的分析侵袭性纤维瘤病的MRI表现,评价MRI对该病的诊断价值。方法回顾分析13例经手术病理证实的侵袭性纤维瘤病的MRI表现。其中男性5例、女性8例;年龄26~79岁,平均43.6岁。所有病例均行MRI平扫加增强扫描。观察病变发生部位、信号特点、强化特征、边界及与周围结构的关系等。结果 MRI扫描显示,13例肿瘤均沿受累肌肉肌纤维长轴方向生长,9例累及多块肌肉,4例病灶局限在单一肌肉。9例境界不清,无包膜,边缘呈爪状浸润生长;4例肿瘤境界清楚,可见不完整包膜。平扫T1WI病灶呈等信号5例、呈低信号8例;T2WI病变呈等信号3例、呈不均匀高信号10例。增强后病灶强化程度中等到明显;均匀强化5例、不均匀强化8例,不均匀强化病灶内可见条状肌肉样信号影。所有病例肿块内均未见明显钙化、坏死或脂肪信号。结论 MRI能准确显示病灶的形态和范围,对侵袭性纤维瘤病的诊断和鉴别诊断有重要价值。 Objective To investigate MRI features of aggressive fibromatosis(AF)and to evaluate the value of MRI in diagnosing of AF.Methods A total of 13 cases(5 male and 8 female) with pathologically proved AF were retrospectively analyzed.The median age of the patients was 43.6 years old(ranged from 26 to 79).All cases underwent MRI examination with pre-and post-contrast enhancement.The location,intensity,enhancement,boundary and surrounding structures were studied.Results All 13 cases were discovered by MRI.The appearance of lesions was infiltrated in 9 cases and mass-like in 4 cases.No calcification and adipose tissue were found in all lesions and no edema on adjacent muscle structures.On MRI scanning variable signal intensity was demonstrated on T1WI;high signal intensity on T2WI in 9 cases and middle signal intensity in 4 cases;increased signal intensity after contrast enhancement.Conclusion MRI is excellent in delineating the location,shape and boundary of AF lesions.It is valuable in detection and differential diagnosis of AF.
出处 《上海医学影像》 2012年第4期299-302,共4页 Shanghai Medical Imaging
关键词 纤维瘤病 侵袭性 磁共振成像 Fibromatosis Aggression Magnetic resonance imaging
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