目的 探讨上颌窦鼻腔出血坏死性鼻息肉的CT表现。方法 回顾性分析经手术病理证实的21例上颌窦鼻腔出血坏死 性鼻息肉临床资料及CT表现。结果 21例出血坏死性鼻息肉均起源于单侧上颌窦，呈膨胀性生长，充填于上颌窦 及同侧中鼻道。密度不均匀，为高低混杂的软组织密度（18/21），其内可见斑点状钙化（5/21），增强后轻度 不均匀强化；上颌窦内侧壁压迫性吸收（13/21）及后外侧壁骨质增厚硬化，上颌窦周围软组织未见明显受侵征 象。结论 出血坏死性鼻息肉的CT表现具有一定的特征性，可作为该病的首选检查方法。

Objective To evaluate CT features of hemorrhagic and necrotic polyps of maxillary sinus and nasal cavity. Methods Twely-one patients with hemorrhagic and necrotic polyps of maxillary sinus and nasal cavity were confirmed by pathology after surgery. The clinical data and CT findings were retrospectively analyzed. Results The lesions were all derived from unilateral maxillary sinus. Showing expansion of growth, filled in the maxillary sinus and ipsilateral middle nasal meatus. Density heterogeneity, for the mixed soft tissue density (18/21), which can be seen spotted calcification (5/21), enhanced mild heterogeneous enhancement; Maxillary sinus medial wall compression absorption (13/21) and posterolateral wall thickening sclerosis (20/21), maxillary sinus surrounding soft tissue no obvious signs of invasion. Conclusion Hemorrhagic necrotizing nasal polyps CT manifestations of a certain characteristic, the disease can be used as the preferred method of examination.