133例腮腺肿瘤的CT征象分析  

CT Features of Parotid Tumors:An Analysis of 133 Cases

作　　者：吕衍春[1] 范卫君[1] 沈静娴[1] 肖鹏[1] 

机构地区：[1]华南肿瘤学国家重点实验室

出　　处：《癌症》2007年第11期1263-1267,共5页Chinese Journal of Cancer

摘　　要：背景与目的:腮腺肿瘤大多数生长缓慢,临床上难以估计其良恶性。本研究拟通过对腮腺肿瘤CT征象的分析,以提高CT对腮腺肿瘤的诊断准确率。方法:对经病理证实的133例腮腺肿瘤共157个病灶的CT征象进行回顾性分析,包括病灶的分布、轮廓、边界、强化程度、瘤内囊变坏死、邻近组织的受累情况等。结果:在157个病灶中,良性肿瘤110个(70.0%)、交界性肿瘤18个(11.5%)、恶性肿瘤29个(18.5%)。80个(72.7%)良性肿瘤及14个(77.8%)交界性肿瘤位于腮腺浅叶,而恶性肿瘤位于深叶(7/29,24.1%)或跨深浅两叶(10/29,34.5%)的比例明显增加。99个(90.0%)良性肿瘤边缘清楚;交界性肿瘤8个(44.4%)边界清楚,10个(55.6%)部分边界不清;而恶性肿瘤边界部分不清(10/29,34.5%)及边界不清(11/29,37.9%)的比例明显增多。良性肿瘤多呈类圆形(68/110,61.8%)或椭圆形(23/110,20.9%),而恶性肿瘤则多表现为不规则形(14/29,48.3%)。11个病灶(2个交界性肿瘤、9个恶性肿瘤)的邻近皮下脂肪受累。腮腺床受累仅见于恶性肿瘤;所有良性肿瘤均未见邻近组织受侵。结论:CT征象可以为腮腺肿瘤的良恶性鉴别诊断提供有价值的依据。位于浅叶、边界清楚、类圆形或椭圆形的腮腺肿瘤多为良性肿瘤;反之,多为恶性肿瘤。BACKGROUND ＆ OBJECTIVE： Most parotid tumors grow slowly. It is difficult to evaluate their malignancy. This study was to analyze the CT features of parotid tumors. METHODS. CT images of 133 patients with 157 lesions of parotid tumors, confirmed by histopathology, were reviewed. The location, contour, margin, enhancing type, necrosis and liquefaction, and adjacent structure involvement were analyzed. RESULTS： Among the 157 lesions, 110 （70.1%） were benign tumors, 18 （11.5%） were borderline tumors, and 29 （18.5%） were malignant tumors; 80 （72.7%） benign lesions and 14 （77.8%） borderline lesions located in the superficial lobe, whereas 7 （24.1%） malignant lesions located in the deep lobe and 10 （34.5%） in both the superficial lobe and the deep Iobe; 99 （90.0%） benign lesions had sharp margins, 8 （44.4%） borderline lesions had sharp margins and 10 （55.6%） had partly unsharp margins, 10 （34.5%） malignant lesions had partly unsharp margins and 11 （37.9%） had unsharp margins. Most benign lesions were round （68/110, 61.8%） or oval （23/110, 20.9%）, while malignant lesions were often irregular （14/29, 48.3%）. Eleven lesions, including 2 borderline tumors and 9 malignant tumors, involved the adjacent subcutaneous fat. All the lesions which involved the bed of parotid gland were malignant. No benign tumor involved adjacent structures. CONCLUSION： On CT images, a parotid tumor located in the superficial lobe, with a round or oval contour and sharp margin, is more likely to be a benign tumor; otherwise, it might be a malignant tumor.

关 键 词：腮腺肿瘤 体层摄影术 X线计算机 诊断 

分 类 号：R739.8[医药卫生—肿瘤]