颌骨肿瘤性病变的CT诊断

目的:探讨颌骨肿瘤性病变的CT诊断价值。方法:搜集28例经手术病理证实的颌骨肿瘤患者的临床及CT资料,回顾性分析各种病变的影像学特点。结果:28例中含牙囊肿10例,造釉细胞瘤8例,骨纤维异常增殖症5例,骨肉瘤3例,鳞癌2例。良性病变主要CT表现为颌骨膨胀性改变,病灶密度不均,边缘光整,类圆形或分叶状;恶性者常有骨质破坏改变及邻近软组织肿胀。结论:CT能够明确颌骨肿瘤的范围、骨质改变,对病变的诊断及鉴别诊断有一定价值。

CT Diagnosis of Tumor and Tumor-like Lesions of the Jaw Bones

Objective:To study the value of CT examination in the diagnosis of tumor and tumor-like lesion of the jaw bones.Methods:Clinical and CT data of 28 cases with tumor and tumor-like lesion of jaw bone proved by surgery and pathology were investigated retrospectively.The characteristic manifestations of CT were analyzed.Results:Of the 28 cases,there were odontogenic cyst (n=10),ameloblastoma (n=8),fibrous dysplasia (n=5),osteosarcoma (n=3) and squamous cell carcinoma (n=2).Benign tumors usually appeared as well-defined expansion of the jaw bone,round or lobulated in shape,with heterogeneous attenuation.Bony destruction was always seen in malignant tumors with adjacent soft tissue mass.Conclusion:CT examination is useful in defining tumor extent and bony changes,which is helpful for the diagnosis and differential diagnosis as well as treatment planning of the jaw bone tumor and tumor-like lesions.