CT扫描在上颌窦恶性肿瘤的TNM分期中有重要作用。
CT scanning is very useful for diagnosis of malignant tumors of the maxillary sinus at TNM stage.
相反原发性上颌骨恶性肿瘤则呈浸润性生长，骨质不规则破坏，大量瘤骨或瘤软骨形成、骨膜反应和软组织肿块等。
On the contrary, primary malignant maxillary tumor showed invasive growth, irregular bony destruction with massive bony or chondral tumor, periosteal reaction and soft tissue mass.
结果：鼻窦恶性肿瘤多原发于上颌窦17例(54.8%)，其次是筛窦10例(32.3%)和额窦4例(12.9%)。
Results Paranasal sinus malignant tumor root mainly in maxillary sinus 17 cases (54.8%), then ethmoid sinus 10 cases (32.3%), and frontal sinus 4 cases (12.9%).
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