上呼吸道淋巴瘤的MRI征象初探

目的探讨上呼吸道淋巴瘤(upper respiratory tract lymphoma, URTL)MRI特点。方法选取URTL 19例,其中10例NK/T细胞淋巴瘤(NK/T cell lymphoma, NK/TCL)和9例B细胞性淋巴瘤(B cell lymphoma, BCL)。18例行MRI平扫+增强,1例行MRI平扫,14例行扩散加权成像(diffusion weighted imaging, DWI)。记录瘤灶部位及形态、强化方式、颈部肿大淋巴结分布情况、邻近组织/结构受侵情况、瘤灶ADC值。分为NK/TCL和BCL两组,根据性别(男性和女性)、颈部肿大淋巴结分布(单侧和双侧)、年龄(以平均值分为≥55岁和<55岁)、ADC值(以平均值分为≥798×10-6mm2/s和<798×10-6mm2/s)、邻近组织/结构受侵(有和无)、瘤灶形态(结节/肿块和非结节/肿块)、强化方式(轻度-中度增强和中度-明显增强)、瘤灶部位(鼻部、咽淋巴环、非鼻部非咽淋巴环)分别分组列表,采用卡方检验分析。结果 12例位于咽淋巴环,10例中度-明显强化,10例颈部肿大淋巴结,11...

Preliminary study on MRI signs of upper respiratory tract lymphoma

Objective To investigate the MRI features of upper respiratory tract lymphoma(URTL).Methods 19 cases of URTL diagnosed clinically and pathologically were retrospectively analyzed,including 10 cases of NK/T cell lymphoma(NK/TCL)and 9 cases of B cell lymphoma(BCL).MRI plain and enhancement scan was performed in 18 cases,MRI plain scan was performed in 1 case,and Diffusion weighted imaging(DWI)was performed in 15 cases.The location,morphology and enhancement mode of tumor,distribution of cervical enlarged lymph nodes,invasion of adjacent tissues/structures,and ADC value of tumor were recorded.All cases were divided into two groups(NK/TCL vs.BCL),and then,the various indicators were divided into two groups,for example,male vs.female,the unilateral vs.the bilateral and≥3 area vs.<3 area in terms of cervical swelling lymph node distribution,nodule/mass vs.non-nodule/mass,mild-moderate enhancement vs.moderate-significant enhancement,with vs.without invasion of adjacent tissues/structures,≥55 years vs.<55 years and≥798×10^-6 mm²/s vs.<798×10^-6 mm²/s based on average.In addition,the tumor sites were divided into three groups nose,pharynx lymphatic loop,and non-nose/pharynx lymphatic loop.Chi-square test was used for analysis.Results 14 cases were male and 12 cases were located in pharyngeal lymphatic loop,6 cases located in the nose,and 1 case located in the epiglottis.10 cases showed moderate-significant enhancement,10 cases accompanied with cervical swelling lymph nodes,11 cases accompanied with invasion of adjacent tissue/structure,and 8 cases presented with nodule/mass.There were statistically significant differences between NK/TCL and BCL in the distribution of cervical swelling lymph nodes the unilateral vs.the Bilateral,P=0.005 and≥3 area vs.<3 area,P=0.008,site of tumor focus(P=0.005)and enhancement mode(P=0.023),and there was no statistically significant difference in the ADC value of tumor.Conclusion On MRI,the URTL mostly presented the growth pattern of non-nodule/mass and accompanied by cervical swelling lymph nodes and invasion of adjacent tissues/structures.There were differences in MRI signs between NK/TCL and BCL.