CT对腮腺良恶性肿瘤的鉴别诊断价值

Differential Diagnosis Value of Parotid Tumors with CT

目的:总结腮腺良恶性肿瘤CT鉴别诊断要点,评价CT对腮腺肿瘤的诊断价值。方法:收集整理经手术病理证实的23例腮腺良性肿瘤和11例恶性肿瘤病例,分析其CT表现特征,判定其良恶性并与手术病理结果对照。结果:CT诊断符合率79.4%(27/34),其中良性肿瘤诊断符合率78.3%(18/23),恶性肿瘤诊断符合率81.8%(9/11)。腮腺肿瘤的CT表现:良性肿瘤多位于浅叶、形态多规则、边界清晰、无侵袭性及淋巴结转移;恶性肿瘤多累及深叶或跨深浅两叶、形态不规则、边界不清晰、具侵袭性及淋巴结转移。结论:腮腺良恶性肿瘤在瘤体部位、形态、边界及侵袭性等方面存在显著影像学差异。CT可明确腮腺肿瘤的部位及良恶性的影像学信息,具有较高鉴别诊断价值。

Objective To summarize the differential diagnosis points of parotid tumors with CT,and to evaluate diagnosis value of parotid tumors with CT.Methods 23 pathologically confirmed cases of parotid benign tumor and 11 cases of malignant tumor were collected.The performance characteristics in CT were analyzed to determine whether benign or malignant and compare with pathologic findings.Results CT diagnosis correspondence rate was 79.4%（27/34）,of which benign tumor diagnosis correspondence rate was 78.3%（18/23）,malignant tumor diagnosis correspondence rate was 81.8%（9/11）.The performance of parotid tumors in CT was as following： most benign tumors were in the superficial lobe,most shapes were regular,boundaries were clear,and with no invasion and lymph node metastasis;while malignant tumor involved in the deep lobe or cross depth-superficial two leaves,the shape was irregular,boundary was not clear,and with invasion and lymph node metastasis.Conclusion The location,shape,border area and invasiveness images of parotid gland benign tumor were significant different with those of malignant tumor.CT can diagnosis the location of parotid gland tumor and the imaging information of benign and malignant tumor,which possesses higher differential diagnosis value.