腹外型韧带样纤维瘤病MR表现与病理对照分析  

The comparision analysis of MRI finding and pathology of extra-abdomimaldesmoid-Type fibromatoses

作　　者：栾贻新[1] 巴照贵 张玉敏[1] 柳澄[2] 

机构地区：[1]泰山医学院附属莱钢医院影像科,山东莱芜271126 [2]山东大学附属山东省医学影像学研究所,山东济南250021

出　　处：《医学影像学杂志》2016年第10期1903-1905,共3页Journal of Medical Imaging

摘　　要：目的探讨腹外型韧带样纤维瘤病的MR表现特点并与病理结果对照分析,以期提高对其诊断的准确性。方法回顾性分析经病理证实的18例韧带样纤维瘤病的MR表现,并与病理结果进行对照分析。结果 17例肿瘤呈浸润性生长,形态不规则,边界不清晰;1例病变呈膨胀性生长,边界清晰。MRI信号不均匀,在T_1WI以等信号或稍低信号为主,在T_2WI以不均匀高信号为主,其内伴有条片状低信号区,仅1例病变内可见囊变坏死;增强后病变呈明显不均匀延迟强化,T_2WI低信号区无强化。手术病理:肿瘤无明显包膜,细胞呈长梭形,无明显异型性,核分裂像少见,呈侵袭性生长,并伴不同程度的胶原纤维增生。病变的MRI信号特点和增强特点与肿瘤细胞及胶原纤维的比例有关。结论腹外型韧带样纤维瘤的MRI表现具有一定的特征性,并能全面显示其病理特征,对其具有较高的诊断及鉴别诊断价值。Objective To study the imaging features of extra-abdomimaldesmoid-type fibromatoses on MRI and to compare them with the pathologic findings so as to improve the diagnostic accuracy. Methods 18 eases proved by pathology were retro- spectively analyzed and compared with findings of pathomorphology. Results The tumor took the form of infiltrative growth pattern in 17 cases, and the lesion was irregular in shape with ill-defined margin. Expansive growth pattern was demonstrated in 1 case, and the lesion had a well-defined border. On MRI, the lesions were characterized by inhomogeneous signal, iso-intensity or hypo-intensity signal of T1WI, hyper-intensity signal on T2WI, all lesions presented with linear and curvilinear areas of low signal, only 1 lesion with necrosis. All the lesions showed striking enhancement, which was progressing and persistent. No enhancement was found in low-intensity signal areas. Surgical and pathological findings： all lesions were without capsule, the tumor cell was spindle in light microscope without obviously heteromorphism, nuclear atypia was no seen, appeared invasive growth, with a variable amount of intermingled collagen fibers. The signal and enhancement character on MRI were relevant to the ratio of tumor cell and collagen fibers. Conclusion The MR/manifestations of extra-abdomimaldesmoid-type fibromatoses have some characteristics and could reveal the pathologic findings, which are of great value for its dagnosis and differentiation.

关 键 词：韧带样纤维瘤病 磁共振成像 病理 

分 类 号：R445.2[医药卫生—影像医学与核医学] R738.7[医药卫生—诊断学]