头颈部结外非霍奇金淋巴瘤的MRI应用价值

目的：探讨头颈部结外非霍奇金淋巴瘤（NHL）的MRI表现及其临床应用价值。方法：回顾性分析48例经病理证实的头颈部结外NHL患者的MRI资料。所有患者均行MRI常规检查,41例同时行增强检查,8例同时行扩散加权成像（DWI）检查。结果：48例中有42例MRI诊断为淋巴瘤,诊断符合率为87.5%。病变形态：弥漫肿胀型14例（29.2%）,结节肿块型20例（41.7%）,溃疡坏死型4例（8.3%）,混合型10例（20.8%）。病灶的主要MRI表现为于T1WI和T2WI呈均匀中等信号,增强扫描有中度均匀强化,DWI上呈明显高信号,平均ADC值为（0.59±0.11）×10^-3mm^2/s,病变检出率为100%。结论：MRI对头颈部结外NHL的诊断准确性较高,在其诊断和鉴别诊断方面有重要的临床应用价值。

Magnetic Resonance Imaging in Extranodal Non-Hodgkin Lymphoma of Head and Neck

Objective:To study the MRI findings and clinical value of extranodal non-Hodgkin lymphoma (NHL) of head and neck.Methods:Retrospectively analyzed the MRI materials of 48 patients with histo-pathology proved extranodal NHL of head and neck.All patients underwent routine MR examinations,41 patients underwent contrast enhanced MR examinations and 8 patients had DWI simultaneously.Results:Of the 48 patients,42 patients were diagnosed as lymphoma by MRI with the accuracy as 87.5%.As for the morphology of lesions...