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目的 探讨鼻腔鼻窦少见肿瘤的CT影像特征及鉴别诊断。方法 回顾性分析 2 6例鼻腔鼻窦少见肿瘤的CT表现 ,并与同期 9例鼻腔鼻窦癌相比较。结果 所有病例均呈实质性肿块 ,2 7 3 5例伴有单侧或双侧鼻窦炎。良性 11例 ,除血管瘤有强化及脑膜瘤钙化特征外 ,余具备良性肿瘤的一般特点 ,各类型不易区分 ;恶性 15例 ,恶性黑色素瘤体积小 ,恶性肉芽肿呈弥漫浸润 ,其余同一般恶性表现。结论 鼻腔鼻窦少见肿瘤多数类型较相同部位常见肿瘤无特征性差异 ;良恶性主要鉴别点为病变外形 ,骨质改变及病变范围 ,诊断需结合临床病理。增强扫描有一定价值
Objective To investigate the CT features and differential diagnosis of rare nasal sinus tumors. Methods A retrospective analysis of 26 cases of nasal sinus rare tumor CT findings, and with the same period in 9 cases of nasal sinus cancer compared. Results All cases showed substantial lumps, and 27 53 cases were accompanied by unilateral or bilateral sinusitis. Benign 11 cases, with the exception of hemangiomas and meningioma calcification characteristics, I have the general characteristics of benign tumors, the types are not easy to distinguish; malignant 15 cases, small malignant melanoma, malignant granuloma was diffuse infiltration, and the rest of the same general malignancy which performed. Conclusions Most of the rare tumors in nasal sinuses have no characteristic difference compared with common tumors in the same site. The main distinguishing points of benign and malignant lesions are the appearance of the lesion, the change of the bone mass and the range of the lesion. The diagnosis should be combined with the clinicopathology. Enhanced scanning has some value