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目的：探讨鼻腔鼻窦内翻性乳头状瘤的ＣＴ表现。材料和方法：分析４０例经手术和病理证实的鼻腔鼻窦内翻性乳头状瘤的ＣＴ征象。结果：ＣＴ检查显示多数病灶起源于中鼻甲和中鼻道，侵犯筛窦和上颌窦，引起良性的骨质受压、吸收破坏和增生硬化等改变，病灶密度不均，轻至中度增强，伴有钙化（６７．５％），病灶边缘呈不规则乳头状（７０％），伴有多个小气泡（６５％）。结论：本病的特征性ＣＴ表现是病灶边缘呈不规则乳头状，或并伴有多个小气泡。ＣＴ检查确诊率较高，可作为本病的首选检查方法
Objective: To investigate the CT findings of inverted papilloma in nasal sinus. MATERIAL AND METHODS: CT findings of 40 cases of nasal inverted papilloma confirmed by surgery and pathology were analyzed. Results: The CT findings showed that most of the lesions originated in the middle turbinate and middle nasal passages, infiltrating the ethmoid sinus and maxillary sinus, resulting in benign bone compression, absorption damage and proliferation and other changes, uneven density lesions, mild to moderate enhancement, Accompanied by calcification (67.5%), the edge of the lesion was irregular papillary (70%), accompanied by multiple small bubbles (65%). Conclusion: The characteristic CT manifestations of the disease are irregular papillary lesions at the edge, or accompanied by multiple small bubbles. CT examination confirmed a higher rate, can be used as the preferred method of examination of this disease