腮腺少见肿瘤的增强CT表现及其病理基础

发布时间：2018-05-17 22:27

本文选题：腮腺少见肿瘤 + CT　；参考：《华西口腔医学杂志》2015年04期

【摘要】：目的探讨腮腺少见肿瘤增强CT表现特征与病理的相关性,以提高影像诊断水平。方法对22例经手术病理证实的少见腮腺肿瘤进行回顾性分析,包括基底细胞瘤6例,肌细胞上皮瘤5例,脉管瘤4例,淋巴上皮囊肿及腮腺脂肪瘤各3例,软骨肉瘤1例。在增强CT图像上,从病变所在腮腺的位置、病变大小和形态、病变密度以及其与周围结构的关系进行总结分析。结果基底细胞瘤发生在腮腺浅叶,边界清楚,病变内易囊变。增强扫描呈不均匀中度-明显强化肿块,边缘或内部可见结节状强化,可伴有增大的淋巴结。肌细胞上皮瘤多发于腮腺浅叶,易发生小囊变,少数病变内可有小点状钙化。实性部分增强后中度-明显强化,多有典型的动脉期强化结节和边缘显著强化。血管瘤为软组织肿块,病变较大可占据整个腮腺,密度均匀或不均匀,可见静脉石,突出于腮腺表面,增强后轻度-明显强化。淋巴上皮囊肿囊液较黏稠,CT值密度较高。软骨肉瘤以囊性为主的肿块,含边缘钙化、骨化成分的肿块。腮腺脂肪瘤可见脂肪密度肿块,边界清晰,无强化,病变内可见纤维分隔。结论腮腺少见肿瘤的增强CT表现具有一定的影像学特征,可揭示其病理基础;增强CT是诊断腮腺少见肿瘤病变性质有效的影像检查手段。
[Abstract]:Objective to investigate the correlation between enhanced CT features and pathology of rare parotid tumors in order to improve the imaging diagnosis. Methods 22 cases of rare parotid tumors confirmed by operation and pathology were retrospectively analyzed, including 6 cases of basal cell tumor, 5 cases of myocytoma, 4 cases of vascular tumor, 3 cases of lymphoepithelial cyst and 3 cases of parotid lipoma, 1 case of chondrosarcoma. In contrast enhanced CT images, the location, size and shape of the lesion, the density of the lesion and the relationship between the lesion and the surrounding structure were summarized and analyzed. Results the basal cell tumor occurred in the superficial parotid lobe with clear boundary and easy cystic change. Contrast-enhanced scans showed uneven moderate-significantly enhanced masses with nodular enhancement at the margin or inside, with enlarged lymph nodes. Myocytic epithelioma is mainly located in the superficial lobe of parotid gland and is prone to microcysts with small calcification in a few lesions. After partial solid enhancement, moderate-obvious enhancement, typical arterial phase enhanced nodules and marked enhancement of margin were found. Hemangioma is a soft tissue mass, the lesion can occupy the whole parotid gland, the density is uniform or uneven, the vein stone is visible, protruding to the parotid gland surface, after enhancement, mildly-obviously enhanced. The density of CT value in cystic fluid of lymphoepithelial cyst was higher than that in viscous cyst. Chondrosarcoma is a cystic mass with marginal calcification and ossification. Fat density mass was seen in parotid lipoma, with clear boundary and no enhancement, and fibrous septum was seen in the lesion. Conclusion the enhanced CT findings of rare parotid tumors have some imaging features, which can reveal the pathological basis, and enhanced CT is an effective imaging method for the diagnosis of the nature of rare parotid tumors.
【作者单位】：四川大学华西第四医院放射科;自贡市第六人民医院放射科;
【分类号】：R739.8;R730.44

【参考文献】