摘要
目的探讨长骨的硬纤维增殖性纤维瘤的影像学特点。方法描述3例硬纤维增殖性纤维瘤的临床与影像学表现,并复习文献所见。结果3例病变分别位于股骨2例,胫骨1例。骨质呈囊状膨胀性改变,3例病灶内见粗细不等骨嵴,呈根须状,病理骨折1例,未见钙化和骨膜反应。病变在MRT1WI呈混杂低信号,在T2WI为低信号混杂的稍高信号,增强后呈不均匀强化。结论长骨干骺端为好发部位,以骨内具有骨嵴结构的囊状膨胀性改变,无钙化及骨膜反应是该病的主要影像学表现,而根须状肿瘤性骨小梁形成具有一定特征性,在T2WI的低到中等信号为硬纤维增殖性纤维瘤重要的MRI特征。
Objective To explore the clinical and imageologic findings of desmoplastic fibroma of bone. Methods Three cases were reported and the relevant documents were studied retrospectively. Results Two tumors arose in femur, one in tibia. In plain film, these lesions were always metaphyseal and expansile lyric. They often had a ridge or honeycomb appearance into lesion, one lesion had pathologic fracture, no calcification and periosteal reaction. The lesion had inhomogeneous low signal intensity （SI） on T1-weighted images, and mixed SI as low SI within high SI on T2-weighted images. On post-contrast T1-weighted images, the mass showed inhomogeneous enhancement. Conclusion Desmoplastic fibroma of long bones are nearly always metaphyseal. Radiographs disclose a espansile lytic lesion with a ridge appearance in it. And the ＂root hair＂ sign is fairly characteristic for this tumor, no calcification and periosteal reaction can be seen. A significant MR feature of desmoplastic fibroma is the presence of low to intermediate SI foci on T2-weighted images.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2006年第12期1307-1309,共3页
Chinese Journal of Radiology
关键词
骨肿瘤
纤维瘤
体层摄影术
X线计算机
磁共振成像
Bone neoplasms
Fibroma
Tomography, X-ray computed
Magnetic resonance imaging
