摘要
目的:分析颅面骨骨纤维结构不良与骨化性纤维瘤的CT表现,探讨二者的CT鉴别要点。材料与方法:回顾性分析经手术病理证实的4例骨纤维结构不良及8例骨化性纤维瘤患者临床及CT资料。采用鼻窦横断面CT扫描,层厚5mm,间距5mm,软组织窗和骨窗观察。结果:骨纤维结构不良4例均为多骨型,受累骨均表现为弥漫性骨髓腔闭塞膨大,呈均匀或不均匀磨玻璃样高密度,病变骨与正常骨逐渐移行,无明确分界。骨化性纤维瘤8例中,单骨型6例,多骨型2例,CT表现为膨胀性骨性肿块,按其密度改变可分为:硬化型(或致密型)2例,囊型1例,混合型5例。病变骨与正常骨均有明确分界。结论:CT能清楚显示颅面骨病变的范围、密度、边界与邻近结构的关系,有助于骨纤维结构不良与骨化性纤维瘤的诊断与鉴别。
Objective:To study the CT features of fibrous dysplasia and ossifying fibroma of the craniofacial bone,focusing on the key points in differential diagnosis.Materials and Methods:CT features and clinical data of 4patients with fibrous dysplasia and8patients with ossifying fibroma of the craniofacial bone proved pathologically were retrospectively analyzed.All the patients were performed with axial CT scanning for craniofacial bone at section thickness and interval of 5mm,and were observed with soft tissue and bone windows.Results:The CT features in all the4fibrous dysplasia cases showed multi-bone affected,with diffuse obliteration and expansion of the medullary cavity,which presented high density similar to ground glass.The demarcation destroyed and normal bone was not clear.The CT features of ossifying fibroma (n=8)with single bone af-fected in six cases and multi-bone affected in2cases showed expansion of bone.It could be sorted by density as follows:dense form(n=2),cystiform(n=1),and mixed form(n=5).Con clu sion:CT scan can well demonstrate the extent,density,border and the relationship with adjacent tissue.It is very important for diagnosis and differential diagnosis of fibrous dysplasia and ossifying fibroma of the craniofacial bone.
出处
《中国临床医学影像杂志》
CAS
2003年第2期119-121,共3页
Journal of China Clinic Medical Imaging
