颌下腺肿瘤CT诊断和鉴别诊断 [中文引用][英文引用]

【摘要】 目的 探讨颌下腺良恶性肿瘤的CT表现及鉴别诊断。 方法 回顾性分析经手术病理证实的30例颌下腺良恶性病变的CT表现,其中20例行增强检查,总结其CT表现及鉴别诊断。结果 (1)颌下腺良性肿瘤17例,均为多形性腺瘤;CT示:10例边缘光整,7例边缘不光滑,12例病灶密度均匀;5例病灶呈稍低密度,增强后10例病灶呈低密度且边界清楚,病变具有渐进性强化的特点。 (2)颌下腺恶性肿瘤13例,其中腺癌6例,淋巴瘤4例,涎腺导管癌2例,未分化癌1例;CT示:恶性肿瘤边缘不光整、密度不均匀,部位患者有坏死囊变,边界不清楚,增强后10例明显不均匀强化。结论 颌下腺良恶性肿瘤各自具有一定的特征性CT表现,CT检查有助于颌下腺良恶性肿瘤的定位及定性诊断。

【Abstract】 Objective To explore the CT findings and differential diagnosis of benign and malignant submandibular gland tumors.Methods The CT findings of30 patients with submandibular benign and malignant lesions confirmed by pathology were retrospective analysed,of which 20 cases went on with enhanced scan,and the CT findings and differential diagnosis were summarized.Results (1 )Seventeen cases were benign pleomorphic adenoma,including 10cases with smooth edge,7cases with unsmooth edge.There were uniform density lesions in12cases,the lesions of 5cases showed slightly low density.After CT enhanced scan,there were 10cases with low-density and well defined lesions,and the characteristic of the lesions was progressive strengthening.(2)There were13cases with submandibular gland cancer,including 6 cases of adenocarcinoma,4cases of lymphoma,2cases of salivary duct carcinoma,1case of undifferentiated carcinoma.The CT characteristics of submandibular gland cancer were unsmooth edge,uneven density,cystic necrosis and unclear boundary.After enhanced CT, 10 cases showed inhomogeneous enhancement.Conclusions There are different CT characteristics of benign and malignant submandibular gland tumors.CT examination is helpful for the located and qualitative diagnosis in benign and malignant submandibular gland tumors.