腮腺多形性腺瘤CT少见征象与病理表现对照研究

发布时间：2018-05-28 11:21

本文选题：多形性腺瘤 + 腮腺　；参考：《临床放射学杂志》2017年12期

【摘要】：目的通过对腮腺多形性腺瘤CT少见征象和病理表现的对照研究提高腮腺多形性腺瘤的诊断准确率。方法回顾性分析经病理证实的22例腮腺多形性腺瘤的CT影像学资料,将CT少见征象与病理表现进行对照研究。结果 22例腮腺多形性腺瘤增强后均呈不均质异常强化,腮腺多形性腺瘤主要由不同比例的纤维、上皮、黏液成分构成。富含血管的纤维上皮成分呈高密度影。含有较多血管的纤维上皮成分、挤压的上皮成分和聚集的上皮纤维成分呈软组织密度影。乏血管的纤维上皮呈较低密度软组织影或磨玻璃样密度影。黏液上皮纤维成分混合呈磨玻璃样影。主要由黏液构成的成分呈低密度影。2例孤立性边缘新月征,2例边缘弧线征,2例角折界面征,1例囊壁假恶性征,1例蜂窝网格征,1例脂肪密度,4例钙化样密度。1例边缘新月征伴外围弧线征,1例囊壁假恶性征伴外围弧线征。7例肿瘤包膜浸润,4例肿瘤浸润邻近腮腺,CT显示3例肿瘤邻近腮腺受侵。7种征象的敏感性100%,总体阳性率50%。单一征象中包含1例征象的阳性率为4.55%,包含2例相同征象的阳性率为9.09%,包含4例相同征象的阳性率为18.18%。2例混合征象的阳性率各为4.55%。结论腮腺多形性腺瘤的CT少见征象有助于提高定性诊断准确率,结合平扫和增强后瘤体实性成分密度低于骨骼肌密度能进一步提高腮腺多形性腺瘤的诊断准确率。CT对于腮腺多形性腺瘤包膜受侵情况的评价有限。
[Abstract]:Objective to improve the diagnostic accuracy of pleomorphic adenoma of parotid gland by contrasting CT findings with pathological findings. Methods CT findings of 22 cases of pleomorphic adenoma of parotid gland proved by pathology were analyzed retrospectively. Results 22 cases of parotid pleomorphic adenoma showed abnormal enhancement after enhancement. Parotid pleomorphic adenoma was mainly composed of different proportion of fiber, epithelium and mucus composition. The fibrous epithelium, which is rich in blood vessels, shows high density. The fibrous epithelium containing more blood vessels, the compressed epithelium and the aggregated epithelial fiber showed soft tissue density. The fibrous epithelium of the vessels was low-density soft tissue shadow or glass-like density shadow. The composition of mucous epithelium fibers was mixed with glass-like opacity. The composition of mucus is mainly composed of low density shadow. 2 cases of isolated marginal crescent sign 2 cases of marginal arc sign 2 cases of angle-fold interface sign 1 case of false malignant sign of cystic wall 1 case of honeycomb mesh sign 1 case of fat density and 4 cases of calcified density. 1 case edge density. Marginal crescent sign with peripheral arc sign 1 case with cystic wall pseudo-malignancy sign with peripheral arc sign 7 cases with tumor capsule infiltration 4 cases with tumor invasion adjacent to parotid gland CT showed sensitivity of 3 cases of tumor adjacent parotid gland invasion by 7 kinds of signs. The overall positive rate was 50%. The positive rate of the single sign was 4.55, the positive rate of the same sign was 9.09, the positive rate of the same sign was 18.18.2 and the positive rate of the mixed sign was 4.55g. The positive rate of the single sign was 4.55, the positive rate of the same sign was 9.09, the positive rate of the four cases was 18.18.2 and the positive rate of the mixed sign was 4.55. Conclusion the rare CT signs of pleomorphic adenoma of parotid gland are helpful to improve the accuracy of qualitative diagnosis. Combined with plain scan and enhanced solid component density lower than skeletal muscle density can further improve the diagnostic accuracy of pleomorphic adenoma of parotid gland. Ct is limited in evaluating the invasion of parotid pleomorphic adenoma.
【作者单位】：赤峰学院附属医院CT/磁共振室;赤峰学院附属医院病理科;
【分类号】：R730.44;R739.8

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