CT在上颌窦鼻腔出血坏死性息肉诊断中的价值

目的　探讨上颌窦鼻腔出血坏死性息肉的CT表现。方法　收集经手术病理证实的 2 9例上颌窦鼻腔出血坏死性息肉 ,术前采用鼻窦轴位和冠状位 ,平扫和 /或增强后CT薄层扫描。结果　病变密度不均匀 ,为低高混杂密度 (2 6/2 9) ,边界清楚 ,增强扫描有轻度强化 ;上颌窦和 /或鼻腔呈膨胀性扩大 ,骨质压迫性吸收破坏以上颌窦内侧壁多见 (13 /2 9) ;多数病例既有骨质破坏 ,又伴有硬化增厚 (15 /2 9)。结论　CT对出血坏死性息肉可作出明确诊断

The Diagnostic Value of CT in Hemorrhagic and Necrotic Polyps of Maxillary Sinus and Nasal Cavity

Objective To evaluate CT features of hemorrhagic and necrotic polyps of maxillary sinus and nasal cavity.Methods Twenty-nine cases of hemorrhagic and necrotic polyps proved pathologically were collected in this study.Axial,coronal,plain and / or contrast enhanced thin-slice CT scans were performed in all the cases.Results The density of lesion was inhomogene (26/29).The lesions had clear boundary and slight enhancement on contrast-enhanced scan.Expanding of nasal and /or antronasal cavity,compressive bony absorption were often seen in inter-wall of maxillary sinus(13/29).The bony destruction in most of the cases were showed with bony sclerosis(25/29).Conclusion The diagnosis of hemorrhagic and necrotic polyps can be confirmed by CT examination.