侵蚀性纤维瘤病的MRI诊断

MRI Diagnosis of Aggressive Fibromatosis

目的 分析侵蚀性纤维瘤病的MRI表现,探讨MRI对该病的诊断价值。资料与方法 回顾性分析11例经手术及病理证实的侵蚀性纤维瘤病的MRI表现。结果 全部病例肿块均沿肌纤维浸润性生长,累及多块肌肉。8例无包膜,1例包膜不完整,2例可见假包膜;8例可见斑片状T1WI、T2 WI低信号;4例可见T1WI、T2 WI与肌肉等信号区域;增强扫描肿块不同程度强化;而T1WI、T2 WI低信号以及与肌肉等信号区域不强化。全部病例瘤周未见水肿,瘤内未见坏死囊变区。结论 侵蚀性纤维瘤病的MRI表现有一定的特征性,MRI检查对该病的定性诊断与鉴别诊断有重要的价值。

Objective To analyze the MR findings of aggressive fibromatosis (AF) and investigate the MRI diagnostic value of AF.Materials and Methods The MRI appearances of eleven cases with AF proved by surgery and pathology were analyzed.Results The lesions invasively grew along muscle fibers and involved multiple muscles in all 11 cases. No capsules in 8 cases; incomplete capsule in 1 case; false capsule in 2 cases. In 8 cases, patchy hypointensity were seen on T 1WI and T 2WI. Signal intensity similar to that of muscle was found in 4 cases. There were different degree enhancement in these cases. There were no enhancement in area that was hypointensity on T 1WI and T 2WI or isointensity to the muscle. No edema around the tumor was found in all cases.Conclusion There is characteristic features of aggressive fibromatosis on MRI. MRI play an important role in the diagnosis and differential diagnosis of AF.