颊间隙病变的CT和MRI表现  

CT and MRI Findings of the Buccal Space Lesions

作　　者：吕建勋[1] 徐坚民[1] 龚静山[1] 吴明祥[1] 朱进[1] 单军[1] 

机构地区：[1]暨南大学第二临床学院放射科,广东518020

出　　处：《放射学实践》2009年第2期138-141,共4页Radiologic Practice

基　　金：深圳市重点专科经费资助

摘　　要：目的:分析颊间隙病变的CT、MRI表现,旨在提高该间隙病变的诊断。方法:回顾性分析2002年1月～2008年3月CT或/和MRI检查发现颊间隙病变及其累及颊间隙病变23例,包括感染性病变3例,肿瘤性和肿瘤样病变20例。除5例经临床治疗后证实外,其余均经手术和穿刺活检病理确诊。结果:3例感染性病变表现为颊脂体及其周围脂肪密度增高;原发和累及颊间隙的肿瘤和肿瘤样病变CT、MRI表现多样,除血管瘤T2加权表现较具特征性外,其余肿瘤信号缺乏特征;多数恶性肿瘤边界不清,肿块相对较大;累及颊间隙的恶性肿瘤多表现为多间隙侵犯;MRI和CT均能清晰显示病变侵犯的范围。结论:CT和MRI是诊断颊间隙病变的重要检查手段,对病变的来源及范围可做出较为准确的评价,对定性具有一定的诊断价值,可为临床制定治疗方案和预后提供依据。Objective： To investigate CT and MRI findings of the buccal space lesions in order to improve the accuracy of diagnosis. Methods：CT and MRI findings of 23 cases of buccal space lesions were retrospectively analyzed, including in fection lesions （n=3）, tumor and tumor-like lesions （n=20）. 18 cases were confirmed by surgery and centesis biopsy, except that 5 cases were confirmed by clinical treatment. Results：The attenuation increased in the buccal fat pad and its peripheral fat tissue in the infection lesions. Most of the buccal space tumors had a nonspecific imaging appearance, but tbe hemangioma demonstrated a higher signal intensity on the progressively more heavily T2-weighted images, Most of the malignancies had unclear rim,and the masses were relatively big. The malignancies involving the buccal space also demonstrated that the masticator space had the same change. CT and MRI could show the extent of the lesions. Conclusion： As an important examination,CT and MRI can accurately determine the origin and extent of the buccal space lesions. It is helpful to the clinician in establishing the treatment plan and providing the evidence for prognosis.

关 键 词：颊间隙 磁共振成像 体层摄影术 X线计算机 

分 类 号：R782[医药卫生—口腔医学] R445[医药卫生—临床医学]