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...

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.