上颌窦良性肿块的影像学诊断  

Imaging Diagnosis of Benign Tumors in Maxillary Sinus

作　　者：孙金磊[1] 王振常[2] 

机构地区：[1]首都医科大学石景山教学医院,北京市石景山医院,北京100043 [2]首都医科大学附属北京同仁医院

出　　处：《中国医学创新》2013年第28期11-14,共4页Medical Innovation of China

摘　　要：目的:探讨上颌窦良性占位病变的影像学特征,提高诊断和鉴别诊断水平。方法:回顾性分析88例经病理证实的上颌窦良性肿块的CT及MRI表现。结果:内翻乳头状瘤64例,48肿块与鼻腔内相连。76.5%为均匀软组织密度,10.4%可见钙化,76.6%邻近骨质受压。T1WI呈等或略低信号,T2WI呈等或高信号,信号混杂,90%呈"脑回状"强化。出血坏死性息肉7例,均位于上颌窦囟门区,密度不均匀,T1WI呈略低信号,T2WI中央区呈高信号,周围呈环形低信号影,明显不均匀强化。其他少见肿块亦各有特点。结论:部分上颌窦良性肿块有较为典型的影像学表现,通过仔细阅片,可大大提高诊断准确率。Objective： To investigate imaging findings of benign tumors in maxillary sinus in order to improve the diagnostic accuracy.Method： CT and MRI data of 88 cases with benign tumor in maxillary sinus confirmed histopathologically were analyzed retrospectively.Result： Inverted papilloma in 64 cases, 48 tumors were connected with the nasal cavity.76.5% showed moderate density, 10.4% of visible calcification, close to 76.6% compression deformation of bone.The leisions showed isointensity or slight hypointensity on T1WI and isointensity or slight hyperintensity on T2WI.90% showed ＂cerebriform＂ enhancement.Hemorrhagic and necrotic polyps, 7 cases located in the maxillary sinus fontanelle Department.Heterogeneous density.T1WI showed slightly lower signal, T2WI showed high signal central area with a low signal intensity rim.Postcontrast MR showed obviously heterogeneous enhancement.Other rare tumor had its own characteristics.Conclusion： Part of benign maxillary sinus lesions show typical image, and the diagnostic accuracy could be improved greatly through careful reading.

关 键 词：上颌窦 X线计算机 体层摄影术 磁共振成像 

分 类 号：R739.62[医药卫生—肿瘤]