鼻窦曲霉菌病五例的影像诊断

探讨鼻窦曲霉菌病的影像表现。方法；搜集经手术，病理证实的鼻窦曲霉菌病５例，均行Ｘ线平片，ＣＴ检查，１例行ＭＲＩ检查。结果：病变常为单侧，起源于上颌窦。Ｘ线平片上见窦腔内云雾状影。典型的ＣＴ表现为病灶中央形态不一的钙化区和周围环形低密度带以及窦腔内网格状阴影，还可伴有非侵入性骨改变。

Imaging diagnosis of aspergillosis of the paranasal sinuses: analysis of 5 cases

Objective: To analyse the imaging findings of aspergillosis of the paranasal sinuses. Methods: 5 cases of aspergillosis of the paranasal sinuse were confirmed by surgery and pathology. All of them were examined by X ray plain radiography and CT, and 1 case by MRI. Results: (1) All of 5 cases always unilaterally located and originated from maxillary sinuses.(2) On X ray plain films, the cavity of maxillary sinuses appeared as clouding. (3) On CT images, the typical manifestations were multiple shaped central calcification ( aspergillar concrement ) and circle shaped low density around, and net like opacification. They were always accompanied with non invaded bony changes. (4) On MR images, Aspergillar concrement appeared as decreased signal intensity on T 1 weighted images and extremely low signal intensity on T 2 weighted images. Conclusion: The result shows that CT and MRI findings have both characteristic features.CT can direct the operation, so CT scanning is an indispensable examination