鼻腔、软腭、副鼻窦纤维瘤和纤维肉瘤的CT表现(附8例报道)

目的　分析纤维瘤和纤维肉瘤的CT表现 ,为临床的诊治提供依据。方法　对经手术病理证实的硬纤维瘤 6例 (鼻腔 3例、上颌窦 2例、软腭 1例 )和纤维肉瘤 2例 (上颌窦及鼻腔各 1例 )进行回顾性分析 ,CT采用轴位扫描 ,层厚和间隔均为 5mm。结果　纤维瘤CT表现为单发圆、半圆或椭圆形实性软组织肿块 ,密度多均匀 ,边缘清楚、整齐 ,有包膜 ,带蒂或有广基 ,造影后轻 -中度强化 ;肿瘤呈膨胀性生长 ,周围骨质受压变薄或吸收 ,邻近结构受推移。纤维肉瘤则表现为此部位恶性肿瘤共同的CT征象。结论　纤维瘤的CT表现有一些特点 ,可与该部位大多数常见良性病变相鉴别。纤维肉瘤则无法与其他恶性肿瘤相区别 ,二者诊断均需依靠病理

CT Appearances of Fibroma and Fibrosarcoma in Nasal Cavity,Soft Palate and Sinuses

Objective To analyse CT appearances of fibroma and fibrosarcoma and to provide evidences for clinical diagnosis and treatment.Methods 8 cases with surgically-and pathologically-proved hard fibroma(nasal cavity,maxillary sinus and soft palate each and all 2 cases)and fibrosarcoma(nasal cavity and maxillary sinus each and all 1 case)were studied with retrospectively analysis.The scanning parameters were 5 mm thickness and interval for axial scanning.Results CT appearances of fibroma were single circular,semicircular or elliptical soft tissue masses which usually had homogeneous density,clear margin,thin and full envelope,wide base or a pedicel and slight or middle enhancement after contrast.The tumors grew distensibly,bones near the mass were constricted and thinned or absorbed but never destroried and the structures nearby were deviated but not involved.Fibrosarcoma showed such common CT manifestations as other malignant tumors in the same locations.Conclusion CT appearances of fibroma has some features,they are different from more common benign lesions.Fibrosarcoma can not be differeciated from other maglinant tumors,thier diagnosis must depend on pathology.