原发性腮腺淋巴瘤的MR表现与病理对照研究

Comparative Study Between MR Imaging and Pathological Findings in Primary Parotid Lymphoma

目的探讨原发性腮腺淋巴瘤的MR表现并分析其病理基础。方法回顾性分析经手术病理证实的5例腮腺淋巴瘤的MRI表现,结合病理及相关文献,分析其MR的表现特点。结果 5例腮腺单发肿块,T1WI呈略高或等信号,T2WI呈高信号,信号较均匀,2例可见包膜且增强后呈环状强化,5例淋巴瘤均累及腮腺深浅叶及合并患侧颈部淋巴结肿大,5例淋巴瘤的ADC值为(0.536±0.037)×10-3mm2/s,TIC曲线类型3例表现为B型,2例表现为C型。腮腺导管水成像仍可见正常走行及分支自然的高信号导管影存在。结论根据MR形态表现及功能学特点,可提示原发性腮腺淋巴瘤的诊断。

Objective To investigate the pathological base and MRI characteristics of primary parotid lymphoma.Methods MR findings of 5case of primary parotid lymphoma were analyzed retrospectively and confirmed by surgical pathology were reviewed in detail, and the literature were reviewed.Results All cases showed slightly hyper-intense or iso-intense on T1WI and uniform hyper-intense on T2WI, 2 case with capsule and had ringlike enhancement. All cases involved both the light leaf and depth leaf, and cervical lymph nodes enlargement could be seen at the affected side. The ADC value of this 5cases is 0.536±0.037, TIC curve of 3 cases shows as B type, and the other 2＆#39;s showed as C type.The magnetic resonance sialography（MRS） showed normal parotid duct signal intensity.Conclusion The characteristic MRI manifestations could prompted the diagnosis of primary parotid lymphoma.