鼻腔鼻窦少见肿瘤的CT表现

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

CT Appearances of the Uncommon Neoplasms of the Paranasal Sinuses and Nasal Cavity

Objective To evaluate the CT features of the uncommon neoplasms of the paranasal sinuses and nasal cavity and related differentiate diagnosis.Methods CT manifestation of 26 cases with uncommon neoplasm of the paranasal sinuses and nasal cavity confirmed by histopathology were retrospectively analyzed and compared with 9 cases of common malignant neoplasm. Results All cases had soft-tissue mass with sinusitis in most cases (27/35).In benign group, 7 cases appeared as common benign tumor except for the hemangioma with marked enhancement and meningioma with calcification . In the malignant group, melanoma was small in volume and malignant granuloma was in infiltrative growth .The others had common appearances of malignancies.Conclusion CT signs are not characteristic in most cases compared with the common neoplasms. Surface configuration, bony change and circumstances are the main considerations in differentiate diagnosis and should be related to clinical and pathological materials..