颌骨肿瘤及肿瘤样病变的CT诊断

目的：探讨CT检查对颌骨肿瘤及肿瘤样病变的诊断意义。方法：回顾性分析68例经手术和病理证实的颌骨肿瘤及肿瘤样病变的临床及CT资料，分析各种病变的影像特点。结果：68例患者中，牙源性囊肿19例，造釉细胞瘤10例，骨纤维异常增殖症10例，混合性牙瘤4例，上皮瘤1例，间叶性肿瘤1例，鳞癌13例，腺样囊腺癌4例，软骨肉瘤3例，淋巴瘤2例，恶性黑色素瘤1例。良性病变多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能够明确肿瘤范围、骨质改变，对疾病的定性诊断及鉴别诊断有一定价值．有助于临床治疗方案的选择。[著者文摘]

CT diagnosis of jaw tumors and tumorous lesions

Objective :To study the value of CT examination in the diagnosis of jaw tumors and tumorous lesions .Methods :Clinical and CT data of 68 cases of jaw tumors and tumorous lesions proved pathologically and surgically were investigated retrospectively. The characteristic manifestations of CT were analyzed. Results :Of 68 cases , odontogenic origin cyst(n = 19) , ameloblastoma (n = 10) , fibrous dysplasia of bone (n = 10), mixed odontoma(n=4),epithelial tumors(n=1), mesenchymal tumors(n=1); squamous cell carcinoma (n = 13) , adenoid cystic carcinoma (n=4), chondrosarcoma squamous cell carcimoma(n = 3) , lymphoma(n=2), lentigo maligna melanoma(n=1). Benign tumors and tumorous lesions appeared bone expansion and well borderline.Bony destruction was always seen in malignant tumors with adjacent soft tissue mass.Conclusion :CT examination is useful in differentiating tumor extent and bony changes,which is also helpful for the definite diagnosis, differential diagnosis and choice of clinical treatment.