骨促纤维增生性纤维瘤影像特点及鉴别诊断

Desmoplastic fibroma of the imaging features and differential diagnosis

目的结合病理基础分析骨促纤维增生性纤维瘤的影像特点,复习文献,总结骨促纤维增生性纤维瘤影像特点及鉴别诊断。方法收集我院经手术病理证实的骨促纤维增生性纤维瘤6例患者,回顾性分析其X线、CT、MRI特征。结果 6例中位于股骨颈4例,胫骨下端2例,均为单发,其中1例患者术后4年复发。X表现主要表现为骨质的溶骨性破坏,其内无钙化和骨化影,病灶呈囊性膨胀性扩张,边界清晰,无明显的骨膜反应,边缘见网状分隔影;CT表现为髓腔内骨质破坏影,正常骨小梁被软组织密度肿块所取代,软组织肿块基本均匀,密度低于周围肌肉的密度,其内未见骨化、钙化,边界清晰。部分骨皮质中断,未见明显软组织肿块影;MRI表现为T1WI、T2WI为均匀低信号,与周围肌肉信号一致,病灶与周围组织间见线性长T1、稍长T2信号影环绕,增强扫描病灶明显不均匀性强化。结论骨促纤维增生性纤维瘤术后具有一定的复发性,其X线、CT、MRI影像具有一定的特征性,可提高其术前诊断正确率。

Objective To summarize the imaging features and differential diagnosis of fibrous hyperplasia of fiber. Combined with the pathological basis of analysis of image characteristics, bone desmoplastic fibroma of bone tumour promoting literature review. Methods Collected in our hospital menstrual operation and pathology confirmed bone desmoplastic fibroma in 6 patients, a retrospective analysis of the X-ray, CT, MRI characteristics. Results In 6 cases of the neck of the femur in 4 cases, distal tibia in 2 cases, which all were single, 4 years a recurrence of postoperative patients. X findings showed bone osteolytic destruction, no calcification and ossification of shadow inside, the lesions were cystic expanding, clear boundary, no periosteal reaction obviously, edge see mesh partition shadow. CT showed the medullary cavity of bone destruction shadow, normal trabecular bone is a soft tissue mass is replaced by a substantially uniform, soft tissue mass, lower density than the surrounding muscle density, its no ossification and calcification, clear boundary. MRI showed TjWI and T2WI were low signal, the signal is consistent with the surrounding muscle, lesion and surrounding tissues belween linear long TI and long T2 signal shadow around a bit, and enhanced scanning lesions obviously uneven enhancement. Conclusion Bone desmoplastie fibronm of posloperalive has a certain recurrent, X-ray, CT, MRI image has certain characteristics, which can improve the aceuracy valeof preop erative diagnosis.