口咽部非霍奇金淋巴瘤的CT和MRI表现  

CT and MRI Manifestations of Oropharyngeal Non-Hondgkin’s Lymphoma

作　　者：欧鸿儒[1,2] 贾红明[2] 张水兴[1] 刘其顺[1] 周正根[1] 黄飚[1] 

机构地区：[1]广东省人民医院放射科,广东广州510080 [2]广东省顺德桂洲医院,广东佛山528305

出　　处：《中国医学影像学杂志》2011年第6期446-449,共4页Chinese Journal of Medical Imaging

摘　　要：目的探讨口咽部非霍奇金淋巴瘤(NHL)的CT和MRI表现。资料与方法回顾性分析21例病理确诊的口咽部非霍奇金淋巴瘤的影像特点。结果 21例中B细胞来源16例,外周T细胞来源3例,NK/T细胞来源2例。腭扁桃体受累最多见,见于16例。病变表现:肿块型7例,弥漫型5例,混合型9例。14例CT平扫呈稍低密度,增强后轻度均匀强化。6例MRI检查T1WI呈稍低信号,T2WI为稍高信号。10例咽旁间隙受压变窄,但MRI检查高信号的脂肪仍存在。15例累及颈部淋巴结,受累淋巴结密度、信号均匀,中心坏死少。结论口咽部非霍奇金淋巴瘤在发病部位、形态、肿瘤的信号、周围组织结构的侵犯方面都有一定的影像学特征,CT和MRI对于口咽部非霍奇金淋巴瘤的鉴别诊断有重要价值。Purpose To investigate the imaging features of oropharyngeal non-Hondgkin′s lymphoma （NHL）. Materials and Methods Imaging features of 21 cases with oropharyngeal NHL confirmed by pathology were analyzed retrospectively. Results Of 21 cases, 16 cases of oropharyngeal NHL were originated from B-cell, and 3 cases from T-cell,and 2 cases from NK/T-cell. The tonsil was most involved（n=16）. There were three types of lesion appearances which were mass type in 7 cases, diffusion type in 5 cases, and the mixed type in 9 cases. the lesions presented as slightly lower-density masses at unenhanced CT scans in 14 cases, and showed homogeneous and mild enhancement after contrast injection. The lesions were slight hypointense on T1WI, and slight hyperintense on T2WI in 6 cases with MR imaging. 10 cases show the parapharyngeal space narrowing, but the high signal of the fat still existed on MRI. 15 cases had cervical lymph nodes involved, which was homogeneous, and necrosis was not common. Conclusion Oropharyngeal NHL have some characteristic imaging features of the location, shape and signal intensity, as well as invasion changes of the regional lymph nodes and surrounding tissue. CT and MRI plays important role in the diagnosis of oropharyngeal NHL.

关 键 词：淋巴瘤 非霍奇金 口咽肿瘤 体层摄影术 X线计算机 磁共振成像 

分 类 号：R733.410.45[医药卫生—肿瘤] R739.630.45[医药卫生—临床医学]